52778838 has 32 divisors (see below), whose sum is σ = 123208704. Its totient is φ = 14758272.

The previous prime is 52778837. The next prime is 52778851. The reversal of 52778838 is 83887725.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52778837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11395 + ... + 15342.

It is an arithmetic number, because the mean of its divisors is an integer number (3850272).

Almost surely, 2^52778838 is an apocalyptic number.

52778838 is an abundant number, since it is smaller than the sum of its proper divisors (70429866).

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

52778838 is a wasteful number, since it uses less digits than its factorization.

52778838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26796.

The product of its digits is 752640, while the sum is 48.

The square root of 52778838 is about 7264.9045416991. The cubic root of 52778838 is about 375.1053641707.

The spelling of 52778838 in words is "fifty-two million, seven hundred seventy-eight thousand, eight hundred thirty-eight".