2556711531 has 12 divisors (see below), whose sum is σ = 4028757720. Its totient is φ = 1549522080.

The previous prime is 2556711517. The next prime is 2556711541. The reversal of 2556711531 is 1351176552.

It is a happy number.

2556711531 is a `hidden beast` number, since 2 + 5 + 56 + 71 + 1 + 531 = 666.

It is not a de Polignac number, because 2556711531 - 2¹⁵ = 2556678763 is a prime.

It is a super-2 number, since 2×2556711531² = 13073547705496727922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2556711511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12912586 + ... + 12912783.

It is an arithmetic number, because the mean of its divisors is an integer number (335729810).

Almost surely, 2^2556711531 is an apocalyptic number.

2556711531 is a deficient number, since it is larger than the sum of its proper divisors (1472046189).

2556711531 is a wasteful number, since it uses less digits than its factorization.

2556711531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25825386 (or 25825383 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 2556711531 is about 50563.9350822303. The cubic root of 2556711531 is about 1367.3947560509.

The spelling of 2556711531 in words is "two billion, five hundred fifty-six million, seven hundred eleven thousand, five hundred thirty-one".