256553212 has 24 divisors (see below), whose sum is σ = 452768400. Its totient is φ = 127196160.

The previous prime is 256553207. The next prime is 256553233. The reversal of 256553212 is 212355652.

It is a happy number.

It is a congruent 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, 378618 + ... + 379294.

It is an arithmetic number, because the mean of its divisors is an integer number (18865350).

Almost surely, 2^256553212 is an apocalyptic number.

It is an amenable number.

256553212 is a deficient number, since it is larger than the sum of its proper divisors (196215188).

256553212 is a wasteful number, since it uses less digits than its factorization.

256553212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 256553212 is about 16017.2785453709. The cubic root of 256553212 is about 635.4174715680.

The spelling of 256553212 in words is "two hundred fifty-six million, five hundred fifty-three thousand, two hundred twelve".