252822521 has 16 divisors (see below), whose sum is σ = 307416960. Its totient is φ = 202970880.

The previous prime is 252822481. The next prime is 252822527. The reversal of 252822521 is 125228252.

It is not a de Polignac number, because 252822521 - 2⁶ = 252822457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252822527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20075 + ... + 30143.

It is an arithmetic number, because the mean of its divisors is an integer number (19213560).

Almost surely, 2^252822521 is an apocalyptic number.

It is an amenable number.

252822521 is a deficient number, since it is larger than the sum of its proper divisors (54594439).

252822521 is a wasteful number, since it uses less digits than its factorization.

252822521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10304.

The product of its digits is 6400, while the sum is 29.

The square root of 252822521 is about 15900.3937372632. The cubic root of 252822521 is about 632.3224275117.

The spelling of 252822521 in words is "two hundred fifty-two million, eight hundred twenty-two thousand, five hundred twenty-one".