252878451 has 16 divisors (see below), whose sum is σ = 408006144. Its totient is φ = 136001664.

The previous prime is 252878441. The next prime is 252878453. The reversal of 252878451 is 154878252.

It is not a de Polignac number, because 252878451 - 2⁵ = 252878419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252878453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353815 + ... + 354528.

It is an arithmetic number, because the mean of its divisors is an integer number (25500384).

Almost surely, 2^252878451 is an apocalyptic number.

252878451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

252878451 is a deficient number, since it is larger than the sum of its proper divisors (155127693).

252878451 is a wasteful number, since it uses less digits than its factorization.

252878451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708370.

The product of its digits is 179200, while the sum is 42.

The square root of 252878451 is about 15902.1524014833. The cubic root of 252878451 is about 632.3690520313.

The spelling of 252878451 in words is "two hundred fifty-two million, eight hundred seventy-eight thousand, four hundred fifty-one".