55879128 has 24 divisors (see below), whose sum is σ = 151339500. Its totient is φ = 18626352.

The previous prime is 55879123. The next prime is 55879141. The reversal of 55879128 is 82197855.

It is a happy number.

55879128 is a `hidden beast` number, since 558 + 7 + 91 + 2 + 8 = 666.

55879128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55879123) 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, 387978 + ... + 388121.

Almost surely, 2^55879128 is an apocalyptic number.

It is an amenable number.

55879128 is an abundant number, since it is smaller than the sum of its proper divisors (95460372).

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

55879128 is a wasteful number, since it uses less digits than its factorization.

55879128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776111 (or 776104 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 55879128 is about 7475.2343107089. The cubic root of 55879128 is about 382.3107765844.

The spelling of 55879128 in words is "fifty-five million, eight hundred seventy-nine thousand, one hundred twenty-eight".