79555556 has 6 divisors (see below), whose sum is σ = 139222230. Its totient is φ = 39777776.

The previous prime is 79555549. The next prime is 79555559. The reversal of 79555556 is 65555597.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55741156 + 23814400 = 7466^2 + 4880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79555556.

It is not an unprimeable number, because it can be changed into a prime (79555559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9944441 + ... + 9944448.

It is an arithmetic number, because the mean of its divisors is an integer number (23203705).

Almost surely, 2^79555556 is an apocalyptic number.

It is an amenable number.

79555556 is a deficient number, since it is larger than the sum of its proper divisors (59666674).

79555556 is a wasteful number, since it uses less digits than its factorization.

79555556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19888893 (or 19888891 counting only the distinct ones).

The product of its digits is 1181250, while the sum is 47.

The square root of 79555556 is about 8919.3921317543. The cubic root of 79555556 is about 430.0875177911.

The spelling of 79555556 in words is "seventy-nine million, five hundred fifty-five thousand, five hundred fifty-six".