256304055 has 48 divisors (see below), whose sum is σ = 481645440. Its totient is φ = 116036928.

The previous prime is 256304051. The next prime is 256304057. The reversal of 256304055 is 550403652.

It is not a de Polignac number, because 256304055 - 2² = 256304051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256304051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77016 + ... + 80274.

It is an arithmetic number, because the mean of its divisors is an integer number (10034280).

Almost surely, 2^256304055 is an apocalyptic number.

256304055 is a deficient number, since it is larger than the sum of its proper divisors (225341385).

256304055 is a wasteful number, since it uses less digits than its factorization.

256304055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388 (or 3381 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 256304055 is about 16009.4988990911. The cubic root of 256304055 is about 635.2117053011.

The spelling of 256304055 in words is "two hundred fifty-six million, three hundred four thousand, fifty-five".