252002531 has 4 divisors (see below), whose sum is σ = 274911864. Its totient is φ = 229093200.

The previous prime is 252002507. The next prime is 252002537. The reversal of 252002531 is 135200252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252002531 is a prime.

It is a super-2 number, since 2×252002531² = 127010551260811922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252002537) 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, 11454650 + ... + 11454671.

It is an arithmetic number, because the mean of its divisors is an integer number (68727966).

Almost surely, 2^252002531 is an apocalyptic number.

252002531 is a deficient number, since it is larger than the sum of its proper divisors (22909333).

252002531 is a wasteful number, since it uses less digits than its factorization.

252002531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22909332.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 252002531 is about 15874.5875851941. The cubic root of 252002531 is about 631.6380744022.

Adding to 252002531 its reverse (135200252), we get a palindrome (387202783).

The spelling of 252002531 in words is "two hundred fifty-two million, two thousand, five hundred thirty-one".