55916559 has 6 divisors (see below), whose sum is σ = 80768376. Its totient is φ = 37277700.

The previous prime is 55916551. The next prime is 55916561. The reversal of 55916559 is 95561955.

55916559 is a `hidden beast` number, since 5 + 5 + 91 + 6 + 559 = 666.

55916559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55916559 - 2³ = 55916551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55916551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3106467 + ... + 3106484.

It is an arithmetic number, because the mean of its divisors is an integer number (13461396).

Almost surely, 2^55916559 is an apocalyptic number.

55916559 is a deficient number, since it is larger than the sum of its proper divisors (24851817).

55916559 is a wasteful number, since it uses less digits than its factorization.

55916559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212957 (or 6212954 counting only the distinct ones).

The product of its digits is 303750, while the sum is 45.

The square root of 55916559 is about 7477.7375589145. The cubic root of 55916559 is about 382.3961219904.

The spelling of 55916559 in words is "fifty-five million, nine hundred sixteen thousand, five hundred fifty-nine".