55577998 has 32 divisors (see below), whose sum is σ = 101352384. Its totient is φ = 22313472.

The previous prime is 55577989. The next prime is 55578011. The reversal of 55577998 is 89977555.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69336 + ... + 70132.

It is an arithmetic number, because the mean of its divisors is an integer number (3167262).

Almost surely, 2^55577998 is an apocalyptic number.

55577998 is a deficient number, since it is larger than the sum of its proper divisors (45774386).

55577998 is a wasteful number, since it uses less digits than its factorization.

55577998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116.

The product of its digits is 3969000, while the sum is 55.

The square root of 55577998 is about 7455.0652579303. The cubic root of 55577998 is about 381.6227876390.

The spelling of 55577998 in words is "fifty-five million, five hundred seventy-seven thousand, nine hundred ninety-eight".