55555768 has 8 divisors (see below), whose sum is σ = 104167080. Its totient is φ = 27777880.

The previous prime is 55555727. The next prime is 55555771. The reversal of 55555768 is 86755555.

It is a tau number, because it is divible by the number of its divisors (8).

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, 3472228 + ... + 3472243.

It is an arithmetic number, because the mean of its divisors is an integer number (13020885).

Almost surely, 2^55555768 is an apocalyptic number.

It is an amenable number.

55555768 is a deficient number, since it is larger than the sum of its proper divisors (48611312).

55555768 is a wasteful number, since it uses less digits than its factorization.

55555768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944477 (or 6944473 counting only the distinct ones).

The product of its digits is 1050000, while the sum is 46.

The square root of 55555768 is about 7453.5741761923. The cubic root of 55555768 is about 381.5719005602.

The spelling of 55555768 in words is "fifty-five million, five hundred fifty-five thousand, seven hundred sixty-eight".