253085864 has 8 divisors (see below), whose sum is σ = 474536010. Its totient is φ = 126542928.

The previous prime is 253085857. The next prime is 253085879. The reversal of 253085864 is 468580352.

It can be written as a sum of positive squares in only one way, i.e., 170093764 + 82992100 = 13042^2 + 9110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15817859 + ... + 15817874.

Almost surely, 2^253085864 is an apocalyptic number.

It is an amenable number.

253085864 is a deficient number, since it is larger than the sum of its proper divisors (221450146).

253085864 is a wasteful number, since it uses less digits than its factorization.

253085864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31635739 (or 31635735 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 253085864 is about 15908.6726033318. The cubic root of 253085864 is about 632.5418962286.

The spelling of 253085864 in words is "two hundred fifty-three million, eighty-five thousand, eight hundred sixty-four".