52215687 has 48 divisors (see below), whose sum is σ = 84015360. Its totient is φ = 31104000.

The previous prime is 52215671. The next prime is 52215707. The reversal of 52215687 is 78651225.

It is a happy number.

52215687 is a `hidden beast` number, since 522 + 1 + 56 + 87 = 666.

It is not a de Polignac number, because 52215687 - 2⁴ = 52215671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 478989 + ... + 479097.

It is an arithmetic number, because the mean of its divisors is an integer number (1750320).

Almost surely, 2^52215687 is an apocalyptic number.

52215687 is a deficient number, since it is larger than the sum of its proper divisors (31799673).

52215687 is a wasteful number, since it uses less digits than its factorization.

52215687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 261 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 52215687 is about 7226.0422777617. The cubic root of 52215687 is about 373.7664641539.

The spelling of 52215687 in words is "fifty-two million, two hundred fifteen thousand, six hundred eighty-seven".