252100257 has 4 divisors (see below), whose sum is σ = 336133680. Its totient is φ = 168066836.

The previous prime is 252100253. The next prime is 252100291. The reversal of 252100257 is 752001252.

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 252100257 - 2² = 252100253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252100253) 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, 42016707 + ... + 42016712.

It is an arithmetic number, because the mean of its divisors is an integer number (84033420).

Almost surely, 2^252100257 is an apocalyptic number.

It is an amenable number.

252100257 is a deficient number, since it is larger than the sum of its proper divisors (84033423).

252100257 is an equidigital number, since it uses as much as digits as its factorization.

252100257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84033422.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 252100257 is about 15877.6653510521. The cubic root of 252100257 is about 631.7197131126.

The spelling of 252100257 in words is "two hundred fifty-two million, one hundred thousand, two hundred fifty-seven".