55125439992 has 48 divisors (see below), whose sum is σ = 170626363440. Its totient is φ = 15750125568.

The previous prime is 55125439991. The next prime is 55125440023. The reversal of 55125439992 is 29993452155.

55125439992 is a `hidden beast` number, since 5 + 5 + 1 + 2 + 543 + 9 + 9 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55125439991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54687433 + ... + 54688440.

It is an arithmetic number, because the mean of its divisors is an integer number (3554715905).

Almost surely, 2^55125439992 is an apocalyptic number.

It is an amenable number.

55125439992 is an abundant number, since it is smaller than the sum of its proper divisors (115500923448).

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

55125439992 is a wasteful number, since it uses less digits than its factorization.

55125439992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109375892 (or 109375885 counting only the distinct ones).

The product of its digits is 4374000, while the sum is 54.

The spelling of 55125439992 in words is "fifty-five billion, one hundred twenty-five million, four hundred thirty-nine thousand, nine hundred ninety-two".