78805552 has 40 divisors (see below), whose sum is σ = 174917376. Its totient is φ = 33692736.

The previous prime is 78805501. The next prime is 78805577. The reversal of 78805552 is 25550887.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82743 + ... + 83689.

Almost surely, 2^78805552 is an apocalyptic number.

It is an amenable number.

78805552 is an abundant number, since it is smaller than the sum of its proper divisors (96111824).

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

78805552 is a wasteful number, since it uses less digits than its factorization.

78805552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1699 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 78805552 is about 8877.2491234616. The cubic root of 78805552 is about 428.7317090232.

The spelling of 78805552 in words is "seventy-eight million, eight hundred five thousand, five hundred fifty-two".