252765861 has 16 divisors (see below), whose sum is σ = 346714368. Its totient is φ = 163699200.

The previous prime is 252765857. The next prime is 252765871. The reversal of 252765861 is 168567252.

252765861 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 252765861 - 2² = 252765857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252765871) 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, 25380 + ... + 33906.

It is an arithmetic number, because the mean of its divisors is an integer number (21669648).

Almost surely, 2^252765861 is an apocalyptic number.

It is an amenable number.

252765861 is a deficient number, since it is larger than the sum of its proper divisors (93948507).

252765861 is a wasteful number, since it uses less digits than its factorization.

252765861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8812.

The product of its digits is 201600, while the sum is 42.

The square root of 252765861 is about 15898.6119205420. The cubic root of 252765861 is about 632.2751874354.

The spelling of 252765861 in words is "two hundred fifty-two million, seven hundred sixty-five thousand, eight hundred sixty-one".