252901947 has 4 divisors (see below), whose sum is σ = 337202600. Its totient is φ = 168601296.

The previous prime is 252901939. The next prime is 252901949. The reversal of 252901947 is 749109252.

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

It is not a de Polignac number, because 252901947 - 2³ = 252901939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252901949) 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, 42150322 + ... + 42150327.

It is an arithmetic number, because the mean of its divisors is an integer number (84300650).

Almost surely, 2^252901947 is an apocalyptic number.

252901947 is a deficient number, since it is larger than the sum of its proper divisors (84300653).

252901947 is an equidigital number, since it uses as much as digits as its factorization.

252901947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84300652.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 252901947 is about 15902.8911522402. The cubic root of 252901947 is about 632.3886367805.

The spelling of 252901947 in words is "two hundred fifty-two million, nine hundred one thousand, nine hundred forty-seven".