256501552 has 20 divisors (see below), whose sum is σ = 497352096. Its totient is φ = 128152640.

The previous prime is 256501507. The next prime is 256501591. The reversal of 256501552 is 255105652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18402 + ... + 29182.

Almost surely, 2^256501552 is an apocalyptic number.

It is an amenable number.

256501552 is a deficient number, since it is larger than the sum of its proper divisors (240850544).

256501552 is a wasteful number, since it uses less digits than its factorization.

256501552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12276 (or 12270 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 256501552 is about 16015.6658306797. The cubic root of 256501552 is about 635.3748191168.

The spelling of 256501552 in words is "two hundred fifty-six million, five hundred one thousand, five hundred fifty-two".