252544687 has 4 divisors (see below), whose sum is σ = 252822816. Its totient is φ = 252266560.

The previous prime is 252544667. The next prime is 252544711. The reversal of 252544687 is 786445252.

It is a happy number.

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 252544687 - 2²⁷ = 118326959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252544667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137698 + ... + 139519.

It is an arithmetic number, because the mean of its divisors is an integer number (63205704).

Almost surely, 2^252544687 is an apocalyptic number.

252544687 is a deficient number, since it is larger than the sum of its proper divisors (278129).

252544687 is an equidigital number, since it uses as much as digits as its factorization.

252544687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278128.

The product of its digits is 537600, while the sum is 43.

The square root of 252544687 is about 15891.6546338007. The cubic root of 252544687 is about 632.0907167956.

The spelling of 252544687 in words is "two hundred fifty-two million, five hundred forty-four thousand, six hundred eighty-seven".