252566531 has 6 divisors (see below), whose sum is σ = 293801940. Its totient is φ = 216485556.

The previous prime is 252566513. The next prime is 252566537. The reversal of 252566531 is 135665252.

252566531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252566531 - 2¹⁸ = 252304387 is a prime.

It is a super-3 number, since 3×252566531³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252566491 and 252566500.

It is not an unprimeable number, because it can be changed into a prime (252566537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2577161 + ... + 2577258.

It is an arithmetic number, because the mean of its divisors is an integer number (48966990).

Almost surely, 2^252566531 is an apocalyptic number.

252566531 is a deficient number, since it is larger than the sum of its proper divisors (41235409).

252566531 is an equidigital number, since it uses as much as digits as its factorization.

252566531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154433 (or 5154426 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 252566531 is about 15892.3418979079. The cubic root of 252566531 is about 632.1089406219.

The spelling of 252566531 in words is "two hundred fifty-two million, five hundred sixty-six thousand, five hundred thirty-one".