55312128 has 54 divisors (see below), whose sum is σ = 159485144. Its totient is φ = 18436608.

The previous prime is 55312121. The next prime is 55312129. The reversal of 55312128 is 82121355.

It is a happy number.

55312128 is a `hidden beast` number, since 5 + 531 + 2 + 128 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55312121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9700 + ... + 14307.

Almost surely, 2^55312128 is an apocalyptic number.

It is an amenable number.

55312128 is an abundant number, since it is smaller than the sum of its proper divisors (104173016).

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

55312128 is a wasteful number, since it uses less digits than its factorization.

55312128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24029 (or 24012 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 55312128 is about 7437.2123809933. The cubic root of 55312128 is about 381.0132882298.

The spelling of 55312128 in words is "fifty-five million, three hundred twelve thousand, one hundred twenty-eight".