251452530553 has 12 divisors (see below), whose sum is σ = 293303044992. Its totient is φ = 214943447880.

The previous prime is 251452530541. The next prime is 251452530577. The reversal of 251452530553 is 355035254152.

It is not a de Polignac number, because 251452530553 - 2⁹ = 251452530041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251452536553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6973413 + ... + 7009378.

It is an arithmetic number, because the mean of its divisors is an integer number (24441920416).

Almost surely, 2^251452530553 is an apocalyptic number.

It is an amenable number.

251452530553 is a deficient number, since it is larger than the sum of its proper divisors (41850514439).

251452530553 is a wasteful number, since it uses less digits than its factorization.

251452530553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13983172 (or 13983165 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 251452530553 in words is "two hundred fifty-one billion, four hundred fifty-two million, five hundred thirty thousand, five hundred fifty-three".