253515231051 has 16 divisors (see below), whose sum is σ = 353281101600. Its totient is φ = 161499921408.

The previous prime is 253515231019. The next prime is 253515231077. The reversal of 253515231051 is 150132515352.

It is a happy number.

It is not a de Polignac number, because 253515231051 - 2⁵ = 253515231019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253515230051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15012016 + ... + 15028893.

It is an arithmetic number, because the mean of its divisors is an integer number (22080068850).

Almost surely, 2^253515231051 is an apocalyptic number.

253515231051 is a deficient number, since it is larger than the sum of its proper divisors (99765870549).

253515231051 is a wasteful number, since it uses less digits than its factorization.

253515231051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30041038.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 253515231051 in words is "two hundred fifty-three billion, five hundred fifteen million, two hundred thirty-one thousand, fifty-one".