52521533 has 16 divisors (see below), whose sum is σ = 56888832. Its totient is φ = 48434400.

The previous prime is 52521509. The next prime is 52521559. The reversal of 52521533 is 33512525.

52521533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52521533 - 2⁸ = 52521277 is a prime.

It is a super-2 number, since 2×52521533² = 5517022857340178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52521563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221410 + ... + 1221452.

It is an arithmetic number, because the mean of its divisors is an integer number (3555552).

Almost surely, 2^52521533 is an apocalyptic number.

It is an amenable number.

52521533 is a deficient number, since it is larger than the sum of its proper divisors (4367299).

52521533 is an frugal number, since it uses more digits than its factorization.

52521533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 115 counting only the distinct ones).

The product of its digits is 4500, while the sum is 26.

The square root of 52521533 is about 7247.1741389317. The cubic root of 52521533 is about 374.4948053442.

The spelling of 52521533 in words is "fifty-two million, five hundred twenty-one thousand, five hundred thirty-three".