256364511 has 48 divisors (see below), whose sum is σ = 394289280. Its totient is φ = 147251520.

The previous prime is 256364503. The next prime is 256364519. The reversal of 256364511 is 115463652.

It is an interprime number because it is at equal distance from previous prime (256364503) and next prime (256364519).

It is not a de Polignac number, because 256364511 - 2³ = 256364503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256364519) 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, 1844280 + ... + 1844418.

It is an arithmetic number, because the mean of its divisors is an integer number (8214360).

Almost surely, 2^256364511 is an apocalyptic number.

256364511 is a deficient number, since it is larger than the sum of its proper divisors (137924769).

256364511 is a wasteful number, since it uses less digits than its factorization.

256364511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 305 counting only the distinct ones).

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

The square root of 256364511 is about 16011.3869168164. The cubic root of 256364511 is about 635.2616451272.

The spelling of 256364511 in words is "two hundred fifty-six million, three hundred sixty-four thousand, five hundred eleven".