252457501 has 4 divisors (see below), whose sum is σ = 252548604. Its totient is φ = 252366400.

The previous prime is 252457477. The next prime is 252457507. The reversal of 252457501 is 105754252.

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 205205625 + 47251876 = 14325^2 + 6874^2 .

It is a cyclic number.

It is not a de Polignac number, because 252457501 - 2⁹ = 252456989 is a prime.

It is a super-2 number, since 2×252457501² = 127469579622330002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252457507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41260 + ... + 46981.

It is an arithmetic number, because the mean of its divisors is an integer number (63137151).

Almost surely, 2^252457501 is an apocalyptic number.

It is an amenable number.

252457501 is a deficient number, since it is larger than the sum of its proper divisors (91103).

252457501 is an equidigital number, since it uses as much as digits as its factorization.

252457501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91102.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 252457501 is about 15888.9112591140. The cubic root of 252457501 is about 632.0179695326.

It can be divided in two parts, 2524 and 57501, that added together give a square (60025 = 245²).

The spelling of 252457501 in words is "two hundred fifty-two million, four hundred fifty-seven thousand, five hundred one".