252565831 has 8 divisors (see below), whose sum is σ = 289846304. Its totient is φ = 215585280.

The previous prime is 252565799. The next prime is 252565837. The reversal of 252565831 is 138565252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 252565831 - 2⁵ = 252565799 is a prime.

It is a super-3 number, since 3×252565831³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252565837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73170 + ... + 76543.

It is an arithmetic number, because the mean of its divisors is an integer number (36230788).

Almost surely, 2^252565831 is an apocalyptic number.

252565831 is a deficient number, since it is larger than the sum of its proper divisors (37280473).

252565831 is a wasteful number, since it uses less digits than its factorization.

252565831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149961.

The product of its digits is 72000, while the sum is 37.

The square root of 252565831 is about 15892.3198747068. The cubic root of 252565831 is about 632.1083566481.

The spelling of 252565831 in words is "two hundred fifty-two million, five hundred sixty-five thousand, eight hundred thirty-one".