252870457 has 4 divisors (see below), whose sum is σ = 288994816. Its totient is φ = 216746100.

The previous prime is 252870451. The next prime is 252870521. The reversal of 252870457 is 754078252.

It is a happy number.

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 252870457 - 2¹¹ = 252868409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252870451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18062169 + ... + 18062182.

It is an arithmetic number, because the mean of its divisors is an integer number (72248704).

Almost surely, 2^252870457 is an apocalyptic number.

It is an amenable number.

252870457 is a deficient number, since it is larger than the sum of its proper divisors (36124359).

252870457 is an equidigital number, since it uses as much as digits as its factorization.

252870457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36124358.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 252870457 is about 15901.9010498745. The cubic root of 252870457 is about 632.3623884723.

The spelling of 252870457 in words is "two hundred fifty-two million, eight hundred seventy thousand, four hundred fifty-seven".