252621716 has 12 divisors (see below), whose sum is σ = 449581440. Its totient is φ = 124169880.

The previous prime is 252621709. The next prime is 252621737. The reversal of 252621716 is 617126252.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534980 + ... + 535451.

It is an arithmetic number, because the mean of its divisors is an integer number (37465120).

Almost surely, 2^252621716 is an apocalyptic number.

It is an amenable number.

252621716 is a deficient number, since it is larger than the sum of its proper divisors (196959724).

252621716 is a wasteful number, since it uses less digits than its factorization.

252621716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070494 (or 1070492 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 252621716 is about 15894.0780166702. The cubic root of 252621716 is about 632.1549752138.

Adding to 252621716 its reverse (617126252), we get a palindrome (869747968).

It can be divided in two parts, 2526 and 21716, that added together give a palindrome (24242).

The spelling of 252621716 in words is "two hundred fifty-two million, six hundred twenty-one thousand, seven hundred sixteen".