253547864 has 8 divisors (see below), whose sum is σ = 475402260. Its totient is φ = 126773928.

The previous prime is 253547863. The next prime is 253547867. The reversal of 253547864 is 468745352.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253547863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15846734 + ... + 15846749.

Almost surely, 2^253547864 is an apocalyptic number.

It is an amenable number.

253547864 is a deficient number, since it is larger than the sum of its proper divisors (221854396).

253547864 is a wasteful number, since it uses less digits than its factorization.

253547864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31693489 (or 31693485 counting only the distinct ones).

The product of its digits is 806400, while the sum is 44.

The square root of 253547864 is about 15923.1863645440. The cubic root of 253547864 is about 632.9265571366.

The spelling of 253547864 in words is "two hundred fifty-three million, five hundred forty-seven thousand, eight hundred sixty-four".