2556208531 has 8 divisors (see below), whose sum is σ = 2585448800. Its totient is φ = 2527132608.

The previous prime is 2556208517. The next prime is 2556208541. The reversal of 2556208531 is 1358026552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556208531 - 2¹⁵ = 2556175763 is a prime.

It is a super-2 number, since 2×2556208531² = 13068404107914355922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556208541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9666 + ... + 72151.

It is an arithmetic number, because the mean of its divisors is an integer number (323181100).

Almost surely, 2^2556208531 is an apocalyptic number.

2556208531 is a deficient number, since it is larger than the sum of its proper divisors (29240269).

2556208531 is a wasteful number, since it uses less digits than its factorization.

2556208531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82173.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 2556208531 is about 50558.9609367123. The cubic root of 2556208531 is about 1367.3050777455.

The spelling of 2556208531 in words is "two billion, five hundred fifty-six million, two hundred eight thousand, five hundred thirty-one".