252408187 has 4 divisors (see below), whose sum is σ = 263382480. Its totient is φ = 241433896.

The previous prime is 252408173. The next prime is 252408193. The reversal of 252408187 is 781804252.

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 252408187 - 2⁷ = 252408059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252408137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5487112 + ... + 5487157.

It is an arithmetic number, because the mean of its divisors is an integer number (65845620).

Almost surely, 2^252408187 is an apocalyptic number.

252408187 is a deficient number, since it is larger than the sum of its proper divisors (10974293).

252408187 is a wasteful number, since it uses less digits than its factorization.

252408187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10974292.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 252408187 is about 15887.3593463483. The cubic root of 252408187 is about 631.9768149309.

The spelling of 252408187 in words is "two hundred fifty-two million, four hundred eight thousand, one hundred eighty-seven".