55606788 has 18 divisors (see below), whose sum is σ = 140561694. Its totient is φ = 18535584.

The previous prime is 55606753. The next prime is 55606829. The reversal of 55606788 is 88760655.

55606788 is a `hidden beast` number, since 5 + 560 + 6 + 7 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44195904 + 11410884 = 6648^2 + 3378^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×55606788² = 6184229743353888, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 772281 + ... + 772352.

It is an arithmetic number, because the mean of its divisors is an integer number (7808983).

Almost surely, 2^55606788 is an apocalyptic number.

It is an amenable number.

55606788 is an abundant number, since it is smaller than the sum of its proper divisors (84954906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55606788 is a wasteful number, since it uses less digits than its factorization.

55606788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544643 (or 1544638 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 55606788 is about 7456.9959098822. The cubic root of 55606788 is about 381.6886711653.

The spelling of 55606788 in words is "fifty-five million, six hundred six thousand, seven hundred eighty-eight".