253903065 has 48 divisors (see below), whose sum is σ = 451954368. Its totient is φ = 121575168.

The previous prime is 253903057. The next prime is 253903073. The reversal of 253903065 is 560309352.

It is an interprime number because it is at equal distance from previous prime (253903057) and next prime (253903073).

It is not a de Polignac number, because 253903065 - 2³ = 253903057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92442 + ... + 95148.

It is an arithmetic number, because the mean of its divisors is an integer number (9415716).

Almost surely, 2^253903065 is an apocalyptic number.

It is an amenable number.

253903065 is a deficient number, since it is larger than the sum of its proper divisors (198051303).

253903065 is a wasteful number, since it uses less digits than its factorization.

253903065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778 (or 2765 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 253903065 is about 15934.3360388816. The cubic root of 253903065 is about 633.2219796533.

The spelling of 253903065 in words is "two hundred fifty-three million, nine hundred three thousand, sixty-five".