252872991 has 12 divisors (see below), whose sum is σ = 417441232. Its totient is φ = 144498816.

The previous prime is 252872947. The next prime is 252873001. The reversal of 252872991 is 199278252.

It is a happy number.

252872991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252872991 - 2⁶ = 252872927 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 (252872491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2006866 + ... + 2006991.

Almost surely, 2^252872991 is an apocalyptic number.

252872991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

252872991 is a deficient number, since it is larger than the sum of its proper divisors (164568241).

252872991 is a wasteful number, since it uses less digits than its factorization.

252872991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013870 (or 4013867 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 252872991 is about 15901.9807256832. The cubic root of 252872991 is about 632.3645007540.

The spelling of 252872991 in words is "two hundred fifty-two million, eight hundred seventy-two thousand, nine hundred ninety-one".