52252181 has 4 divisors (see below), whose sum is σ = 53467392. Its totient is φ = 51036972.

The previous prime is 52252153. The next prime is 52252183. The reversal of 52252181 is 18125225.

52252181 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52252181 is a prime.

It is a super-2 number, since 2×52252181² = 5460580838513522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52252181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52252183) 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, 607541 + ... + 607626.

It is an arithmetic number, because the mean of its divisors is an integer number (13366848).

Almost surely, 2^52252181 is an apocalyptic number.

It is an amenable number.

52252181 is a deficient number, since it is larger than the sum of its proper divisors (1215211).

52252181 is a wasteful number, since it uses less digits than its factorization.

52252181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215210.

The product of its digits is 1600, while the sum is 26.

The square root of 52252181 is about 7228.5670087508. The cubic root of 52252181 is about 373.8535200919.

The spelling of 52252181 in words is "fifty-two million, two hundred fifty-two thousand, one hundred eighty-one".