252661443 has 4 divisors (see below), whose sum is σ = 336881928. Its totient is φ = 168440960.

The previous prime is 252661433. The next prime is 252661469. The reversal of 252661443 is 344166252.

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 252661443 - 2⁹ = 252660931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252661433) 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, 42110238 + ... + 42110243.

It is an arithmetic number, because the mean of its divisors is an integer number (84220482).

Almost surely, 2^252661443 is an apocalyptic number.

252661443 is a deficient number, since it is larger than the sum of its proper divisors (84220485).

252661443 is an equidigital number, since it uses as much as digits as its factorization.

252661443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84220484.

The product of its digits is 34560, while the sum is 33.

The square root of 252661443 is about 15895.3277097391. The cubic root of 252661443 is about 632.1881107980.

The spelling of 252661443 in words is "two hundred fifty-two million, six hundred sixty-one thousand, four hundred forty-three".