252116451 has 6 divisors (see below), whose sum is σ = 364168220. Its totient is φ = 168077628.

The previous prime is 252116437. The next prime is 252116461. The reversal of 252116451 is 154611252.

252116451 is a `hidden beast` number, since 2 + 5 + 2 + 11 + 645 + 1 = 666.

It is not a de Polignac number, because 252116451 - 2⁵ = 252116419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252116461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14006461 + ... + 14006478.

Almost surely, 2^252116451 is an apocalyptic number.

252116451 is a deficient number, since it is larger than the sum of its proper divisors (112051769).

252116451 is a wasteful number, since it uses less digits than its factorization.

252116451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28012945 (or 28012942 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 252116451 is about 15878.1753044863. The cubic root of 252116451 is about 631.7332392789.

The spelling of 252116451 in words is "two hundred fifty-two million, one hundred sixteen thousand, four hundred fifty-one".