52278538 has 32 divisors (see below), whose sum is σ = 89893440. Its totient is φ = 22602240.

The previous prime is 52278469. The next prime is 52278547. The reversal of 52278538 is 83587225.

52278538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52278538.

It is an unprimeable number.

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, 47373 + ... + 48463.

It is an arithmetic number, because the mean of its divisors is an integer number (2809170).

Almost surely, 2^52278538 is an apocalyptic number.

52278538 is a deficient number, since it is larger than the sum of its proper divisors (37614902).

52278538 is a wasteful number, since it uses less digits than its factorization.

52278538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222.

The product of its digits is 134400, while the sum is 40.

The square root of 52278538 is about 7230.3898926683. The cubic root of 52278538 is about 373.9163691488.

The spelling of 52278538 in words is "fifty-two million, two hundred seventy-eight thousand, five hundred thirty-eight".