52539140 has 24 divisors (see below), whose sum is σ = 111367872. Its totient is φ = 20818400.

The previous prime is 52539139. The next prime is 52539143. The reversal of 52539140 is 4193525.

It is a super-2 number, since 2×52539140² = 5520722463879200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52539143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10136 + ... + 14415.

It is an arithmetic number, because the mean of its divisors is an integer number (4640328).

Almost surely, 2^52539140 is an apocalyptic number.

It is an amenable number.

52539140 is an abundant number, since it is smaller than the sum of its proper divisors (58828732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52539140 is a wasteful number, since it uses less digits than its factorization.

52539140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24667 (or 24665 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 52539140 is about 7248.3887864821. The cubic root of 52539140 is about 374.5366484575.

The spelling of 52539140 in words is "fifty-two million, five hundred thirty-nine thousand, one hundred forty".