Properties of the Number 1457

One Thousand Four Hundred Fifty-Seven

Basics

Value: 1456 → 1457 → 1458

Parity: odd

Prime: No

Previous Prime: 1453

Next Prime: 1459

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 31 × 47

Divisors: 1, 31, 47, 1457

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10110110001

Octal: 2661

Duodecimal: A15

Hexadecimal: 5b1

Square: 2122849

Square Root: 38.17066936798463

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

Second pentagonal numbers: a(n) = n*(3·n + 1)/2. A5449

Number of partitions of n into parts 5k+2 or 5k+3. A3106

a(n) = 2·n² - 1. A56220

The "comma sequence": the lexicographically earliest sequence of positive numbers with the property that the sequence formed by the pairs of digits adjacent to the commas between the terms is the same as the sequence of successive differences between the terms. A121805

a(0)=1, a(n) = 3·a(n-1) + 2; a(n) = 2·3ⁿ - 1. A48473

a(n) = n + floor(n²/2). A74148

Numbers of the form 3^m - 1 or 2·3^m - 1; i.e., the union of sequences A048473 and A024023. A62318

Centered 16-gonal numbers. A69129

a(0) = 0 and then alternately even and odd numbers in increasing order such that the sum of any two successive terms is a square. A77221

Numbers k such that there is exactly one prime-power between prime(k)+1 and prime(k+1)-1. A377287