52656381 has 24 divisors (see below), whose sum is σ = 78643136. Its totient is φ = 33929280.

The previous prime is 52656377. The next prime is 52656389. The reversal of 52656381 is 18365625.

52656381 is a `hidden beast` number, since 526 + 56 + 3 + 81 = 666.

It is not a de Polignac number, because 52656381 - 2² = 52656377 is a prime.

It is a super-2 number, since 2×52656381² = 5545388920034322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52656389) 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, 39201 + ... + 40521.

Almost surely, 2^52656381 is an apocalyptic number.

It is an amenable number.

52656381 is a deficient number, since it is larger than the sum of its proper divisors (25986755).

52656381 is a wasteful number, since it uses less digits than its factorization.

52656381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1470 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 52656381 is about 7256.4716632810. The cubic root of 52656381 is about 374.8150341153.

The spelling of 52656381 in words is "fifty-two million, six hundred fifty-six thousand, three hundred eighty-one".