55656555 has 32 divisors (see below), whose sum is σ = 95266368. Its totient is φ = 27648000.

The previous prime is 55656553. The next prime is 55656569. The reversal of 55656555 is 55565655.

It is not a de Polignac number, because 55656555 - 2¹ = 55656553 is a prime.

It is a super-2 number, since 2×55656555² = 6195304228936050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55656551) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 24675 + ... + 26835.

It is an arithmetic number, because the mean of its divisors is an integer number (2977074).

Almost surely, 2^55656555 is an apocalyptic number.

55656555 is a deficient number, since it is larger than the sum of its proper divisors (39609813).

55656555 is a wasteful number, since it uses less digits than its factorization.

55656555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287.

The product of its digits is 562500, while the sum is 42.

The square root of 55656555 is about 7460.3320971656. The cubic root of 55656555 is about 381.8025052057.

The spelling of 55656555 in words is "fifty-five million, six hundred fifty-six thousand, five hundred fifty-five".