256166052 has 24 divisors (see below), whose sum is σ = 605910816. Its totient is φ = 84218688.

The previous prime is 256166021. The next prime is 256166087. The reversal of 256166052 is 250661652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145338 + ... + 147089.

It is an arithmetic number, because the mean of its divisors is an integer number (25246284).

Almost surely, 2^256166052 is an apocalyptic number.

It is an amenable number.

256166052 is an abundant number, since it is smaller than the sum of its proper divisors (349744764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256166052 is a wasteful number, since it uses less digits than its factorization.

256166052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292507 (or 292505 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 256166052 is about 16005.1882838035. The cubic root of 256166052 is about 635.0976781561.

The spelling of 256166052 in words is "two hundred fifty-six million, one hundred sixty-six thousand, fifty-two".