55989718 has 4 divisors (see below), whose sum is σ = 83984580. Its totient is φ = 27994858.

The previous prime is 55989701. The next prime is 55989727. The reversal of 55989718 is 81798955.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13997428 + ... + 13997431.

It is an arithmetic number, because the mean of its divisors is an integer number (20996145).

Almost surely, 2^55989718 is an apocalyptic number.

55989718 is a deficient number, since it is larger than the sum of its proper divisors (27994862).

55989718 is a wasteful number, since it uses less digits than its factorization.

55989718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27994861.

The product of its digits is 907200, while the sum is 52.

The square root of 55989718 is about 7482.6277469884. The cubic root of 55989718 is about 382.5628199327.

The spelling of 55989718 in words is "fifty-five million, nine hundred eighty-nine thousand, seven hundred eighteen".