52778508 has 24 divisors (see below), whose sum is σ = 123842880. Its totient is φ = 17493840.

The previous prime is 52778483. The next prime is 52778527. The reversal of 52778508 is 80587725.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 52778508.

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, 10138 + ... + 14433.

It is an arithmetic number, because the mean of its divisors is an integer number (5160120).

Almost surely, 2^52778508 is an apocalyptic number.

It is an amenable number.

52778508 is an abundant number, since it is smaller than the sum of its proper divisors (71064372).

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

52778508 is a wasteful number, since it uses less digits than its factorization.

52778508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24757 (or 24755 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 52778508 is about 7264.8818297341. The cubic root of 52778508 is about 375.1045823862.

The spelling of 52778508 in words is "fifty-two million, seven hundred seventy-eight thousand, five hundred eight".