252068181 has 4 divisors (see below), whose sum is σ = 336090912. Its totient is φ = 168045452.

The previous prime is 252068153. The next prime is 252068189. The reversal of 252068181 is 181860252.

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 252068181 - 2⁵ = 252068149 is a prime.

It is a super-2 number, since 2×252068181² = 127076735745297522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252068189) 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, 42011361 + ... + 42011366.

It is an arithmetic number, because the mean of its divisors is an integer number (84022728).

Almost surely, 2^252068181 is an apocalyptic number.

It is an amenable number.

252068181 is a deficient number, since it is larger than the sum of its proper divisors (84022731).

252068181 is an equidigital number, since it uses as much as digits as its factorization.

252068181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84022730.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 252068181 is about 15876.6552207951. The cubic root of 252068181 is about 631.6929196704.

The spelling of 252068181 in words is "two hundred fifty-two million, sixty-eight thousand, one hundred eighty-one".