256097055 has 16 divisors (see below), whose sum is σ = 414361440. Its totient is φ = 135049728.

The previous prime is 256097053. The next prime is 256097077. The reversal of 256097055 is 550790652.

It is not a de Polignac number, because 256097055 - 2¹ = 256097053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256097053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94582 + ... + 97251.

It is an arithmetic number, because the mean of its divisors is an integer number (25897590).

Almost surely, 2^256097055 is an apocalyptic number.

256097055 is a deficient number, since it is larger than the sum of its proper divisors (158264385).

256097055 is a wasteful number, since it uses less digits than its factorization.

256097055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191930.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 256097055 is about 16003.0326813389. The cubic root of 256097055 is about 635.0406529453.

The spelling of 256097055 in words is "two hundred fifty-six million, ninety-seven thousand, fifty-five".