55919555 has 16 divisors (see below), whose sum is σ = 70260480. Its totient is φ = 42644448.

The previous prime is 55919503. The next prime is 55919557. The reversal of 55919555 is 55591955.

55919555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55919555 - 2⁶ = 55919491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55919557) 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 15 ways as a sum of consecutive naturals, for example, 42944 + ... + 44226.

It is an arithmetic number, because the mean of its divisors is an integer number (4391280).

Almost surely, 2^55919555 is an apocalyptic number.

55919555 is a deficient number, since it is larger than the sum of its proper divisors (14340925).

55919555 is a wasteful number, since it uses less digits than its factorization.

55919555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its digits is 253125, while the sum is 44.

The square root of 55919555 is about 7477.9378842031. The cubic root of 55919555 is about 382.4029514421.

The spelling of 55919555 in words is "fifty-five million, nine hundred nineteen thousand, five hundred fifty-five".