256592061 has 12 divisors (see below), whose sum is σ = 404327040. Its totient is φ = 155510280.

The previous prime is 256592041. The next prime is 256592069. The reversal of 256592061 is 160295652.

256592061 is a `hidden beast` number, since 2 + 5 + 6 + 592 + 0 + 61 = 666.

It is not a de Polignac number, because 256592061 - 2⁶ = 256591997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256592069) 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, 1295821 + ... + 1296018.

It is an arithmetic number, because the mean of its divisors is an integer number (33693920).

Almost surely, 2^256592061 is an apocalyptic number.

It is an amenable number.

256592061 is a deficient number, since it is larger than the sum of its proper divisors (147734979).

256592061 is a wasteful number, since it uses less digits than its factorization.

256592061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591856 (or 2591853 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 256592061 is about 16018.4912210857. The cubic root of 256592061 is about 635.4495430010.

The spelling of 256592061 in words is "two hundred fifty-six million, five hundred ninety-two thousand, sixty-one".