55555568 has 10 divisors (see below), whose sum is σ = 107638944. Its totient is φ = 27777776.

The previous prime is 55555559. The next prime is 55555573. The reversal of 55555568 is 86555555.

It is a super-2 number, since 2×55555568² = 6172842271605248, which contains 22 as substring.

It is a plaindrome in base 10.

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, 1736096 + ... + 1736127.

Almost surely, 2^55555568 is an apocalyptic number.

It is an amenable number.

55555568 is a deficient number, since it is larger than the sum of its proper divisors (52083376).

55555568 is a wasteful number, since it uses less digits than its factorization.

55555568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472231 (or 3472225 counting only the distinct ones).

The product of its digits is 750000, while the sum is 44.

The square root of 55555568 is about 7453.5607597980. The cubic root of 55555568 is about 381.5714426751.

The spelling of 55555568 in words is "fifty-five million, five hundred fifty-five thousand, five hundred sixty-eight".