55516656 has 40 divisors (see below), whose sum is σ = 154451920. Its totient is φ = 17081856.

The previous prime is 55516639. The next prime is 55516661. The reversal of 55516656 is 65661555.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43861 + ... + 45108.

It is an arithmetic number, because the mean of its divisors is an integer number (3861298).

Almost surely, 2^55516656 is an apocalyptic number.

It is an amenable number.

55516656 is an abundant number, since it is smaller than the sum of its proper divisors (98935264).

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

55516656 is a wasteful number, since it uses less digits than its factorization.

55516656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88993 (or 88987 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

The square root of 55516656 is about 7450.9500065428. The cubic root of 55516656 is about 381.4823356400.

The spelling of 55516656 in words is "fifty-five million, five hundred sixteen thousand, six hundred fifty-six".