78877552 has 40 divisors (see below), whose sum is σ = 174270096. Its totient is φ = 34262016.

The previous prime is 78877549. The next prime is 78877567. The reversal of 78877552 is 25577887.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78877496 and 78877505.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7618 + ... + 14689.

Almost surely, 2^78877552 is an apocalyptic number.

It is an amenable number.

78877552 is an abundant number, since it is smaller than the sum of its proper divisors (95392544).

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

78877552 is a wasteful number, since it uses less digits than its factorization.

78877552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22345 (or 22339 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 49.

The square root of 78877552 is about 8881.3035079317. The cubic root of 78877552 is about 428.8622382649.

The spelling of 78877552 in words is "seventy-eight million, eight hundred seventy-seven thousand, five hundred fifty-two".