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Properties of the Number 5649

Five Thousand Six Hundred Forty-Nine

Basics

Value: 5648 → 5649 → 5650

Parity: odd

Prime: No

Previous Prime: 5647

Next Prime: 5651

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 269

Divisors: 1, 3, 7, 21, 269, 807, 1883, 5649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011000010001

Octal: 13021

Duodecimal: 3329

Hexadecimal: 1611

Square: 31911201

Square Root: 75.15982969645421

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Interprimes (A024675) which are of the form s·prime, s=21. A75296
Number T(n,k) of set partitions of [n] such that k is the largest element of the last block; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A271466
Number of ON cells after n generations of two-dimensional automaton based on knight moves (see Comments for definition). A319018
Bases b where exactly seven primes p with p < b exist such that p is a base-b Wieferich prime. A325883
Sum of all odd-indexed parts minus the sum of all even-indexed parts of all partitions of n, with the parts written in nondecreasing order. A194714
Smallest b such that the k consecutive primes starting with prime(n) are all base-b Wieferich primes, i.e., satisfy bp-1 == 1 (mod p2). Square array A(n, k), read by antidiagonals downwards. A286816
A(n, k) is the k-th number b > 1 such that bprime(n+i-1) == 1 (mod prime(n+i)2) for each i = 0..2, with k running over the positive integers; square array, read by antidiagonals, downwards. A319060
a(n) is the smallest b > 1 such that prime(n), prime(n+1) and prime(n+2) are all base-b Wieferich primes. A344827
Matrix inverse of Euler's triangle A008292. A55325
Number of ways to partition 1 into distinct reduced fractions i/j with j <= n. A154888