52891815 has 16 divisors (see below), whose sum is σ = 85104000. Its totient is φ = 28049952.

The previous prime is 52891799. The next prime is 52891823. The reversal of 52891815 is 51819825.

It is not a de Polignac number, because 52891815 - 2⁴ = 52891799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7165 + ... + 12534.

It is an arithmetic number, because the mean of its divisors is an integer number (5319000).

Almost surely, 2^52891815 is an apocalyptic number.

52891815 is a deficient number, since it is larger than the sum of its proper divisors (32212185).

52891815 is a wasteful number, since it uses less digits than its factorization.

52891815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19886.

The product of its digits is 28800, while the sum is 39.

The square root of 52891815 is about 7272.6759174323. The cubic root of 52891815 is about 375.3728203349.

The spelling of 52891815 in words is "fifty-two million, eight hundred ninety-one thousand, eight hundred fifteen".