52813881 has 12 divisors (see below), whose sum is σ = 77074452. Its totient is φ = 34845696.

The previous prime is 52813841. The next prime is 52813903. The reversal of 52813881 is 18831825.

It can be written as a sum of positive squares in 2 ways, for example, as 38638656 + 14175225 = 6216^2 + 3765^2 .

It is not a de Polignac number, because 52813881 - 2⁷ = 52813753 is a prime.

It is a super-2 number, since 2×52813881² = 5578612052564322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52813841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29376 + ... + 31121.

It is an arithmetic number, because the mean of its divisors is an integer number (6422871).

Almost surely, 2^52813881 is an apocalyptic number.

It is an amenable number.

52813881 is a deficient number, since it is larger than the sum of its proper divisors (24260571).

52813881 is a wasteful number, since it uses less digits than its factorization.

52813881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60600 (or 60597 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 52813881 is about 7267.3159419417. The cubic root of 52813881 is about 375.1883640348.

The spelling of 52813881 in words is "fifty-two million, eight hundred thirteen thousand, eight hundred eighty-one".