252765251 has 4 divisors (see below), whose sum is σ = 255605400. Its totient is φ = 249925104.

The previous prime is 252765221. The next prime is 252765259. The reversal of 252765251 is 152567252.

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 252765251 - 2²² = 248570947 is a prime.

It is a super-2 number, since 2×252765251² = 127780544226186002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252765259) 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, 1419941 + ... + 1420118.

It is an arithmetic number, because the mean of its divisors is an integer number (63901350).

Almost surely, 2^252765251 is an apocalyptic number.

252765251 is a deficient number, since it is larger than the sum of its proper divisors (2840149).

252765251 is an equidigital number, since it uses as much as digits as its factorization.

252765251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840148.

The product of its digits is 42000, while the sum is 35.

The square root of 252765251 is about 15898.5927364657. The cubic root of 252765251 is about 632.2746788117.

The spelling of 252765251 in words is "two hundred fifty-two million, seven hundred sixty-five thousand, two hundred fifty-one".