253645995 has 16 divisors (see below), whose sum is σ = 410395680. Its totient is φ = 133757184.

The previous prime is 253645957. The next prime is 253646017. The reversal of 253645995 is 599546352.

It is a happy number.

It is not a de Polignac number, because 253645995 - 2⁸ = 253645739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93664 + ... + 96333.

It is an arithmetic number, because the mean of its divisors is an integer number (25649730).

Almost surely, 2^253645995 is an apocalyptic number.

253645995 is a deficient number, since it is larger than the sum of its proper divisors (156749685).

253645995 is a wasteful number, since it uses less digits than its factorization.

253645995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190094.

The product of its digits is 1458000, while the sum is 48.

The square root of 253645995 is about 15926.2674534870. The cubic root of 253645995 is about 633.0082007677.

The spelling of 253645995 in words is "two hundred fifty-three million, six hundred forty-five thousand, nine hundred ninety-five".