52181181 has 24 divisors (see below), whose sum is σ = 84704256. Its totient is φ = 30713760.

The previous prime is 52181167. The next prime is 52181189. The reversal of 52181181 is 18118125.

It is not a de Polignac number, because 52181181 - 2⁶ = 52181117 is a prime.

It is a super-2 number, since 2×52181181² = 5445751301109522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52181189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7005 + ... + 12386.

It is an arithmetic number, because the mean of its divisors is an integer number (3529344).

Almost surely, 2^52181181 is an apocalyptic number.

It is an amenable number.

52181181 is a deficient number, since it is larger than the sum of its proper divisors (32523075).

52181181 is a wasteful number, since it uses less digits than its factorization.

52181181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19433 (or 19430 counting only the distinct ones).

The product of its digits is 640, while the sum is 27.

The square root of 52181181 is about 7223.6542691355. The cubic root of 52181181 is about 373.6841132464.

The spelling of 52181181 in words is "fifty-two million, one hundred eighty-one thousand, one hundred eighty-one".