52872391 has 16 divisors (see below), whose sum is σ = 64124928. Its totient is φ = 42933600.

The previous prime is 52872373. The next prime is 52872401. The reversal of 52872391 is 19327825.

52872391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52872391 - 2⁵ = 52872359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52872391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52872301) 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, 1531 + ... + 10396.

It is an arithmetic number, because the mean of its divisors is an integer number (4007808).

Almost surely, 2^52872391 is an apocalyptic number.

52872391 is a deficient number, since it is larger than the sum of its proper divisors (11252537).

52872391 is a wasteful number, since it uses less digits than its factorization.

52872391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11982.

The product of its digits is 30240, while the sum is 37.

The square root of 52872391 is about 7271.3403853760. The cubic root of 52872391 is about 375.3268640473.

The spelling of 52872391 in words is "fifty-two million, eight hundred seventy-two thousand, three hundred ninety-one".