55560555 has 24 divisors (see below), whose sum is σ = 96576480. Its totient is φ = 29548800.

The previous prime is 55560551. The next prime is 55560577. The reversal of 55560555 is 55506555.

55560555 is a `hidden beast` number, since 55 + 56 + 0 + 555 = 666.

It is not a de Polignac number, because 55560555 - 2² = 55560551 is a prime.

It is a super-3 number, since 3×55560555³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55560551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16506 + ... + 19584.

It is an arithmetic number, because the mean of its divisors is an integer number (4024020).

Almost surely, 2^55560555 is an apocalyptic number.

55560555 is a deficient number, since it is larger than the sum of its proper divisors (41015925).

55560555 is a wasteful number, since it uses less digits than its factorization.

55560555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3488 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 55560555 is about 7453.8952903834. The cubic root of 55560555 is about 381.5828597116.

The spelling of 55560555 in words is "fifty-five million, five hundred sixty thousand, five hundred fifty-five".