55979770 has 32 divisors (see below), whose sum is σ = 125629056. Its totient is φ = 17448000.

The previous prime is 55979753. The next prime is 55979771. The reversal of 55979770 is 7797955.

It is not an unprimeable number, because it can be changed into a prime (55979771) 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, 35581 + ... + 37120.

It is an arithmetic number, because the mean of its divisors is an integer number (3925908).

Almost surely, 2^55979770 is an apocalyptic number.

55979770 is an abundant number, since it is smaller than the sum of its proper divisors (69649286).

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

55979770 is a wasteful number, since it uses less digits than its factorization.

55979770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72726.

The product of its (nonzero) digits is 694575, while the sum is 49.

The square root of 55979770 is about 7481.9629777218. The cubic root of 55979770 is about 382.5401612465.

The spelling of 55979770 in words is "fifty-five million, nine hundred seventy-nine thousand, seven hundred seventy".