252820257 has 16 divisors (see below), whose sum is σ = 340022592. Its totient is φ = 167088960.

The previous prime is 252820247. The next prime is 252820273. The reversal of 252820257 is 752028252.

252820257 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 252820257 - 2⁶ = 252820193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252820207) 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, 253083 + ... + 254079.

It is an arithmetic number, because the mean of its divisors is an integer number (21251412).

Almost surely, 2^252820257 is an apocalyptic number.

It is an amenable number.

252820257 is a deficient number, since it is larger than the sum of its proper divisors (87202335).

252820257 is a wasteful number, since it uses less digits than its factorization.

252820257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 252820257 is about 15900.3225438983. The cubic root of 252820257 is about 632.3205400450.

It can be divided in two parts, 25 and 2820257, that added together give a palindrome (2820282).

The spelling of 252820257 in words is "two hundred fifty-two million, eight hundred twenty thousand, two hundred fifty-seven".