52818591 has 16 divisors (see below), whose sum is σ = 80587008. Its totient is φ = 30144000.

The previous prime is 52818589. The next prime is 52818607. The reversal of 52818591 is 19581825.

It is not a de Polignac number, because 52818591 - 2¹ = 52818589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52818551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32191 + ... + 33791.

It is an arithmetic number, because the mean of its divisors is an integer number (5036688).

Almost surely, 2^52818591 is an apocalyptic number.

52818591 is a deficient number, since it is larger than the sum of its proper divisors (27768417).

52818591 is a wasteful number, since it uses less digits than its factorization.

52818591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182.

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

The square root of 52818591 is about 7267.6399883318. The cubic root of 52818591 is about 375.1995169403.

The spelling of 52818591 in words is "fifty-two million, eight hundred eighteen thousand, five hundred ninety-one".