252657731 has 8 divisors (see below), whose sum is σ = 257891040. Its totient is φ = 247441792.

The previous prime is 252657683. The next prime is 252657733. The reversal of 252657731 is 137756252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252657731 - 2⁶ = 252657667 is a prime.

It is a super-2 number, since 2×252657731² = 127671858068136722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252657733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27410 + ... + 35448.

It is an arithmetic number, because the mean of its divisors is an integer number (32236380).

Almost surely, 2^252657731 is an apocalyptic number.

252657731 is a deficient number, since it is larger than the sum of its proper divisors (5233309).

252657731 is an equidigital number, since it uses as much as digits as its factorization.

252657731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685.

The product of its digits is 88200, while the sum is 38.

The square root of 252657731 is about 15895.2109454389. The cubic root of 252657731 is about 632.1850148319.

The spelling of 252657731 in words is "two hundred fifty-two million, six hundred fifty-seven thousand, seven hundred thirty-one".