52923681 has 6 divisors (see below), whose sum is σ = 76445330. Its totient is φ = 35282448.

The previous prime is 52923671. The next prime is 52923707. The reversal of 52923681 is 18632925.

52923681 is a `hidden beast` number, since 5 + 292 + 368 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51840000 + 1083681 = 7200^2 + 1041^2 .

It is not a de Polignac number, because 52923681 - 2⁷ = 52923553 is a prime.

It is a super-2 number, since 2×52923681² = 5601832021179522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52923671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2940196 + ... + 2940213.

Almost surely, 2^52923681 is an apocalyptic number.

It is an amenable number.

52923681 is a deficient number, since it is larger than the sum of its proper divisors (23521649).

52923681 is a wasteful number, since it uses less digits than its factorization.

52923681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880415 (or 5880412 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 52923681 is about 7274.8663905257. The cubic root of 52923681 is about 375.4481894565.

The spelling of 52923681 in words is "fifty-two million, nine hundred twenty-three thousand, six hundred eighty-one".