252118187 has 4 divisors (see below), whose sum is σ = 252619920. Its totient is φ = 251616456.

The previous prime is 252118183. The next prime is 252118247. The reversal of 252118187 is 781811252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252118187 - 2² = 252118183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252118183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250112 + ... + 251117.

It is an arithmetic number, because the mean of its divisors is an integer number (63154980).

Almost surely, 2^252118187 is an apocalyptic number.

252118187 is a deficient number, since it is larger than the sum of its proper divisors (501733).

252118187 is an equidigital number, since it uses as much as digits as its factorization.

252118187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501732.

The product of its digits is 8960, while the sum is 35.

The square root of 252118187 is about 15878.2299706233. The cubic root of 252118187 is about 631.7346892522.

The spelling of 252118187 in words is "two hundred fifty-two million, one hundred eighteen thousand, one hundred eighty-seven".