252566111 has 4 divisors (see below), whose sum is σ = 288646992. Its totient is φ = 216485232.

The previous prime is 252566087. The next prime is 252566113. The reversal of 252566111 is 111665252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252566111 - 2²⁶ = 185457247 is a prime.

It is a super-3 number, since 3×252566111³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252566113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18040430 + ... + 18040443.

It is an arithmetic number, because the mean of its divisors is an integer number (72161748).

Almost surely, 2^252566111 is an apocalyptic number.

252566111 is a deficient number, since it is larger than the sum of its proper divisors (36080881).

252566111 is an equidigital number, since it uses as much as digits as its factorization.

252566111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36080880.

The product of its digits is 3600, while the sum is 29.

The square root of 252566111 is about 15892.3286839909. The cubic root of 252566111 is about 632.1085902378.

The spelling of 252566111 in words is "two hundred fifty-two million, five hundred sixty-six thousand, one hundred eleven".