252992187 has 32 divisors (see below), whose sum is σ = 430133760. Its totient is φ = 143964000.

The previous prime is 252992153. The next prime is 252992219. The reversal of 252992187 is 781299252.

It is a happy number.

It is not a de Polignac number, because 252992187 - 2¹¹ = 252990139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252992107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44773 + ... + 50105.

It is an arithmetic number, because the mean of its divisors is an integer number (13441680).

Almost surely, 2^252992187 is an apocalyptic number.

252992187 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

252992187 is a deficient number, since it is larger than the sum of its proper divisors (177141573).

252992187 is a wasteful number, since it uses less digits than its factorization.

252992187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600 (or 5594 counting only the distinct ones).

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

The square root of 252992187 is about 15905.7281191400. The cubic root of 252992187 is about 632.4638437466.

The spelling of 252992187 in words is "two hundred fifty-two million, nine hundred ninety-two thousand, one hundred eighty-seven".