52091138 has 16 divisors (see below), whose sum is σ = 86443200. Its totient is φ = 23343600.

The previous prime is 52091119. The next prime is 52091147. The reversal of 52091138 is 83119025.

It is a self number, because there is not a number n which added to its sum of digits gives 52091138.

It is an unprimeable number.

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, 15113 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (5402700).

Almost surely, 2^52091138 is an apocalyptic number.

52091138 is a deficient number, since it is larger than the sum of its proper divisors (34352062).

52091138 is a wasteful number, since it uses less digits than its factorization.

52091138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33433.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 52091138 is about 7217.4190677832. The cubic root of 52091138 is about 373.4690484122.

The spelling of 52091138 in words is "fifty-two million, ninety-one thousand, one hundred thirty-eight".