252853921 has 4 divisors (see below), whose sum is σ = 252890644. Its totient is φ = 252817200.

The previous prime is 252853907. The next prime is 252853943. The reversal of 252853921 is 129358252.

252853921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 132710400 + 120143521 = 11520^2 + 10961^2 .

It is a 3-Lehmer number, since φ(252853921) divides (252853921-1)³.

It is a cyclic number.

It is not a de Polignac number, because 252853921 - 2⁷ = 252853793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252853961) 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, 4590 + ... + 22951.

It is an arithmetic number, because the mean of its divisors is an integer number (63222661).

It is a Poulet number, since it divides 2^252853920-1.

Almost surely, 2^252853921 is an apocalyptic number.

252853921 is the 9181-st octagonal number.

It is an amenable number.

252853921 is a deficient number, since it is larger than the sum of its proper divisors (36723).

252853921 is an equidigital number, since it uses as much as digits as its factorization.

252853921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36722.

The product of its digits is 43200, while the sum is 37.

The square root of 252853921 is about 15901.3811035394. The cubic root of 252853921 is about 632.3486041121.

The spelling of 252853921 in words is "two hundred fifty-two million, eight hundred fifty-three thousand, nine hundred twenty-one".