252501533 has 4 divisors (see below), whose sum is σ = 256781280. Its totient is φ = 248221788.

The previous prime is 252501503. The next prime is 252501539. The reversal of 252501533 is 335105252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252501533 - 2²² = 248307229 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 (252501539) 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, 2139785 + ... + 2139902.

It is an arithmetic number, because the mean of its divisors is an integer number (64195320).

Almost surely, 2^252501533 is an apocalyptic number.

It is an amenable number.

252501533 is a deficient number, since it is larger than the sum of its proper divisors (4279747).

252501533 is an equidigital number, since it uses as much as digits as its factorization.

252501533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279746.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 252501533 is about 15890.2968191283. The cubic root of 252501533 is about 632.0547115550.

Adding to 252501533 its reverse (335105252), we get a palindrome (587606785).

The spelling of 252501533 in words is "two hundred fifty-two million, five hundred one thousand, five hundred thirty-three".