252111550431 has 32 divisors (see below), whose sum is σ = 374550966720. Its totient is φ = 149771059200.

The previous prime is 252111550423. The next prime is 252111550433. The reversal of 252111550431 is 134055111252.

It is not a de Polignac number, because 252111550431 - 2³ = 252111550423 is a prime.

It is a super-2 number, since 2×252111550431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252111550433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8672701 + ... + 8701721.

It is an arithmetic number, because the mean of its divisors is an integer number (11704717710).

Almost surely, 2^252111550431 is an apocalyptic number.

252111550431 is a deficient number, since it is larger than the sum of its proper divisors (122439416289).

252111550431 is a wasteful number, since it uses less digits than its factorization.

252111550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36747.

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 252111550431 its reverse (134055111252), we get a palindrome (386166661683).

The spelling of 252111550431 in words is "two hundred fifty-two billion, one hundred eleven million, five hundred fifty thousand, four hundred thirty-one".