253017947522 has 18 divisors (see below), whose sum is σ = 390102215643. Its totient is φ = 123077007792.

The previous prime is 253017947489. The next prime is 253017947549. The reversal of 253017947522 is 225749710352.

It can be written as a sum of positive squares in 5 ways, for example, as 215750031121 + 37267916401 = 464489^2 + 193049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=355681.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26315588 + ... + 26325200.

Almost surely, 2^253017947522 is an apocalyptic number.

253017947522 is a deficient number, since it is larger than the sum of its proper divisors (137084268121).

253017947522 is an frugal number, since it uses more digits than its factorization.

253017947522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19302 (or 9652 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 253017947522 in words is "two hundred fifty-three billion, seventeen million, nine hundred forty-seven thousand, five hundred twenty-two".