252927991 has 8 divisors (see below), whose sum is σ = 258796944. Its totient is φ = 247124160.

The previous prime is 252927979. The next prime is 252928001. The reversal of 252927991 is 199729252.

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 252927991 - 2¹¹ = 252925943 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 (252927911) 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, 8380 + ... + 24001.

It is an arithmetic number, because the mean of its divisors is an integer number (32349618).

Almost surely, 2^252927991 is an apocalyptic number.

252927991 is a deficient number, since it is larger than the sum of its proper divisors (5868953).

252927991 is a wasteful number, since it uses less digits than its factorization.

252927991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32561.

The product of its digits is 204120, while the sum is 46.

The square root of 252927991 is about 15903.7099759773. The cubic root of 252927991 is about 632.4103439606.

The spelling of 252927991 in words is "two hundred fifty-two million, nine hundred twenty-seven thousand, nine hundred ninety-one".