256182057 has 12 divisors (see below), whose sum is σ = 370206720. Its totient is φ = 170711448.

The previous prime is 256182029. The next prime is 256182077. The reversal of 256182057 is 750281652.

It is a happy number.

It is not a de Polignac number, because 256182057 - 2⁷ = 256181929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256182077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20968 + ... + 30854.

It is an arithmetic number, because the mean of its divisors is an integer number (30850560).

Almost surely, 2^256182057 is an apocalyptic number.

It is an amenable number.

256182057 is a deficient number, since it is larger than the sum of its proper divisors (114024663).

256182057 is a wasteful number, since it uses less digits than its factorization.

256182057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12772 (or 12769 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 256182057 is about 16005.6882701120. The cubic root of 256182057 is about 635.1109046376.

The spelling of 256182057 in words is "two hundred fifty-six million, one hundred eighty-two thousand, fifty-seven".