256953351 has 16 divisors (see below), whose sum is σ = 363140064. Its totient is φ = 161055744.

The previous prime is 256953329. The next prime is 256953353. The reversal of 256953351 is 153359652.

It is not a de Polignac number, because 256953351 - 2⁶ = 256953287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256953353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61051 + ... + 65123.

It is an arithmetic number, because the mean of its divisors is an integer number (22696254).

Almost surely, 2^256953351 is an apocalyptic number.

256953351 is a deficient number, since it is larger than the sum of its proper divisors (106186713).

256953351 is a wasteful number, since it uses less digits than its factorization.

256953351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330.

The product of its digits is 121500, while the sum is 39.

The square root of 256953351 is about 16029.7645335170. The cubic root of 256953351 is about 635.7476476994.

The spelling of 256953351 in words is "two hundred fifty-six million, nine hundred fifty-three thousand, three hundred fifty-one".