52989381 has 12 divisors (see below), whose sum is σ = 76984908. Its totient is φ = 35121024.

The previous prime is 52989367. The next prime is 52989383. The reversal of 52989381 is 18398925.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43441281 + 9548100 = 6591^2 + 3090^2 .

It is not a de Polignac number, because 52989381 - 2⁷ = 52989253 is a prime.

It is a super-2 number, since 2×52989381² = 5615748997526322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52989383) 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, 15460 + ... + 18573.

It is an arithmetic number, because the mean of its divisors is an integer number (6415409).

Almost surely, 2^52989381 is an apocalyptic number.

It is an amenable number.

52989381 is a deficient number, since it is larger than the sum of its proper divisors (23995527).

52989381 is a wasteful number, since it uses less digits than its factorization.

52989381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34212 (or 34209 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 52989381 is about 7279.3805368314. The cubic root of 52989381 is about 375.6034869550.

The spelling of 52989381 in words is "fifty-two million, nine hundred eighty-nine thousand, three hundred eighty-one".