252777831 has 4 divisors (see below), whose sum is σ = 337037112. Its totient is φ = 168518552.

The previous prime is 252777827. The next prime is 252777857. The reversal of 252777831 is 138777252.

252777831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 252777831 - 2² = 252777827 is a prime.

It is a super-2 number, since 2×252777831² = 127793263690129122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252777631) 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, 42129636 + ... + 42129641.

It is an arithmetic number, because the mean of its divisors is an integer number (84259278).

Almost surely, 2^252777831 is an apocalyptic number.

252777831 is a deficient number, since it is larger than the sum of its proper divisors (84259281).

252777831 is an equidigital number, since it uses as much as digits as its factorization.

252777831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84259280.

The product of its digits is 164640, while the sum is 42.

The square root of 252777831 is about 15898.9883640438. The cubic root of 252777831 is about 632.2851679691.

The spelling of 252777831 in words is "two hundred fifty-two million, seven hundred seventy-seven thousand, eight hundred thirty-one".