52909581 has 16 divisors (see below), whose sum is σ = 71596800. Its totient is φ = 34751808.

The previous prime is 52909567. The next prime is 52909589. The reversal of 52909581 is 18590925.

52909581 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 52909581 - 2⁶ = 52909517 is a prime.

It is a super-2 number, since 2×52909581² = 5598847523191122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52909589) 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, 77815 + ... + 78491.

It is an arithmetic number, because the mean of its divisors is an integer number (4474800).

Almost surely, 2^52909581 is an apocalyptic number.

It is an amenable number.

52909581 is a deficient number, since it is larger than the sum of its proper divisors (18687219).

52909581 is a wasteful number, since it uses less digits than its factorization.

52909581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 52909581 is about 7273.8972360077. The cubic root of 52909581 is about 375.4148440204.

The spelling of 52909581 in words is "fifty-two million, nine hundred nine thousand, five hundred eighty-one".