252780443 has 4 divisors (see below), whose sum is σ = 261497040. Its totient is φ = 244063848.

The previous prime is 252780433. The next prime is 252780449. The reversal of 252780443 is 344087252.

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 252780443 - 2⁶ = 252780379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252780449) 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, 4358255 + ... + 4358312.

It is an arithmetic number, because the mean of its divisors is an integer number (65374260).

Almost surely, 2^252780443 is an apocalyptic number.

252780443 is a deficient number, since it is larger than the sum of its proper divisors (8716597).

252780443 is an equidigital number, since it uses as much as digits as its factorization.

252780443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8716596.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 252780443 is about 15899.0705074228. The cubic root of 252780443 is about 632.2873458014.

The spelling of 252780443 in words is "two hundred fifty-two million, seven hundred eighty thousand, four hundred forty-three".