252288257 has 4 divisors (see below), whose sum is σ = 271695060. Its totient is φ = 232881456.

The previous prime is 252288241. The next prime is 252288259. The reversal of 252288257 is 752882252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 154654096 + 97634161 = 12436^2 + 9881^2 .

It is a cyclic number.

It is not a de Polignac number, because 252288257 - 2⁴ = 252288241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252288259) 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, 9703382 + ... + 9703407.

It is an arithmetic number, because the mean of its divisors is an integer number (67923765).

Almost surely, 2^252288257 is an apocalyptic number.

It is an amenable number.

252288257 is a deficient number, since it is larger than the sum of its proper divisors (19406803).

252288257 is a wasteful number, since it uses less digits than its factorization.

252288257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19406802.

The product of its digits is 179200, while the sum is 41.

The square root of 252288257 is about 15883.5845135788. The cubic root of 252288257 is about 631.8767059399.

The spelling of 252288257 in words is "two hundred fifty-two million, two hundred eighty-eight thousand, two hundred fifty-seven".