52015689 has 20 divisors (see below), whose sum is σ = 84767760. Its totient is φ = 31524120.

The previous prime is 52015687. The next prime is 52015703. The reversal of 52015689 is 98651025.

It is a happy number.

52015689 is a `hidden beast` number, since 520 + 1 + 56 + 89 = 666.

It is not a de Polignac number, because 52015689 - 2¹ = 52015687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52015687) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28299 + ... + 30080.

It is an arithmetic number, because the mean of its divisors is an integer number (4238388).

Almost surely, 2^52015689 is an apocalyptic number.

It is an amenable number.

52015689 is a deficient number, since it is larger than the sum of its proper divisors (32752071).

52015689 is a wasteful number, since it uses less digits than its factorization.

52015689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58402 (or 58393 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 52015689 is about 7212.1903053095. The cubic root of 52015689 is about 373.2886499633.

The spelling of 52015689 in words is "fifty-two million, fifteen thousand, six hundred eighty-nine".