252890691 has 16 divisors (see below), whose sum is σ = 364621824. Its totient is φ = 155298944.

The previous prime is 252890683. The next prime is 252890707. The reversal of 252890691 is 196098252.

252890691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252890691 - 2³ = 252890683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252890621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50355 + ... + 55148.

It is an arithmetic number, because the mean of its divisors is an integer number (22788864).

Almost surely, 2^252890691 is an apocalyptic number.

252890691 is a deficient number, since it is larger than the sum of its proper divisors (111731133).

252890691 is a wasteful number, since it uses less digits than its factorization.

252890691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105570.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 252890691 is about 15902.5372503887. The cubic root of 252890691 is about 632.3792546567.

The spelling of 252890691 in words is "two hundred fifty-two million, eight hundred ninety thousand, six hundred ninety-one".