252756815 has 4 divisors (see below), whose sum is σ = 303308184. Its totient is φ = 202205448.

The previous prime is 252756811. The next prime is 252756827. The reversal of 252756815 is 518657252.

252756815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 252756815 - 2² = 252756811 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 (252756811) 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, 25275677 + ... + 25275686.

It is an arithmetic number, because the mean of its divisors is an integer number (75827046).

Almost surely, 2^252756815 is an apocalyptic number.

252756815 is a deficient number, since it is larger than the sum of its proper divisors (50551369).

252756815 is an equidigital number, since it uses as much as digits as its factorization.

252756815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50551368.

The product of its digits is 168000, while the sum is 41.

The square root of 252756815 is about 15898.3274277516. The cubic root of 252756815 is about 632.2676447112.

The spelling of 252756815 in words is "two hundred fifty-two million, seven hundred fifty-six thousand, eight hundred fifteen".