52533997 has 4 divisors (see below), whose sum is σ = 53815356. Its totient is φ = 51252640.

The previous prime is 52533991. The next prime is 52534007. The reversal of 52533997 is 79933525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 31685641 = 4566^2 + 5629^2 .

It is a cyclic number.

It is not a de Polignac number, because 52533997 - 2³ = 52533989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52533991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640618 + ... + 640699.

It is an arithmetic number, because the mean of its divisors is an integer number (13453839).

Almost surely, 2^52533997 is an apocalyptic number.

It is an amenable number.

52533997 is a deficient number, since it is larger than the sum of its proper divisors (1281359).

52533997 is a wasteful number, since it uses less digits than its factorization.

52533997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281358.

The product of its digits is 255150, while the sum is 43.

The square root of 52533997 is about 7248.0340093021. The cubic root of 52533997 is about 374.5244270619.

The spelling of 52533997 in words is "fifty-two million, five hundred thirty-three thousand, nine hundred ninety-seven".