252811715 has 8 divisors (see below), whose sum is σ = 326710608. Its totient is φ = 186691680.

The previous prime is 252811693. The next prime is 252811721. The reversal of 252811715 is 517118252.

252811715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-252811715 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944641 + ... + 1944770.

It is an arithmetic number, because the mean of its divisors is an integer number (40838826).

Almost surely, 2^252811715 is an apocalyptic number.

252811715 is a deficient number, since it is larger than the sum of its proper divisors (73898893).

252811715 is a wasteful number, since it uses less digits than its factorization.

252811715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889429.

The product of its digits is 5600, while the sum is 32.

The square root of 252811715 is about 15900.0539307261. The cubic root of 252811715 is about 632.3134185918.

Adding to 252811715 its reverse (517118252), we get a palindrome (769929967).

The spelling of 252811715 in words is "two hundred fifty-two million, eight hundred eleven thousand, seven hundred fifteen".