252240263 has 4 divisors (see below), whose sum is σ = 275171208. Its totient is φ = 229309320.

The previous prime is 252240251. The next prime is 252240269. The reversal of 252240263 is 362042252.

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 252240263 - 2⁸ = 252240007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252240269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11465456 + ... + 11465477.

It is an arithmetic number, because the mean of its divisors is an integer number (68792802).

Almost surely, 2^252240263 is an apocalyptic number.

252240263 is a deficient number, since it is larger than the sum of its proper divisors (22930945).

252240263 is a wasteful number, since it uses less digits than its factorization.

252240263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930944.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 252240263 is about 15882.0736366509. The cubic root of 252240263 is about 631.8366350910.

The spelling of 252240263 in words is "two hundred fifty-two million, two hundred forty thousand, two hundred sixty-three".