252057871 has 4 divisors (see below), whose sum is σ = 271446952. Its totient is φ = 232668792.

The previous prime is 252057863. The next prime is 252057887. The reversal of 252057871 is 178750252.

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 252057871 - 2³ = 252057863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252057871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252057671) 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, 9694521 + ... + 9694546.

It is an arithmetic number, because the mean of its divisors is an integer number (67861738).

Almost surely, 2^252057871 is an apocalyptic number.

252057871 is a deficient number, since it is larger than the sum of its proper divisors (19389081).

252057871 is a wasteful number, since it uses less digits than its factorization.

252057871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19389080.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 252057871 is about 15876.3305269196. The cubic root of 252057871 is about 631.6843071292.

The spelling of 252057871 in words is "two hundred fifty-two million, fifty-seven thousand, eight hundred seventy-one".