55125680 has 20 divisors (see below), whose sum is σ = 128167392. Its totient is φ = 22050240.

The previous prime is 55125677. The next prime is 55125691. The reversal of 55125680 is 8652155.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344456 + ... + 344615.

Almost surely, 2^55125680 is an apocalyptic number.

It is an amenable number.

55125680 is an abundant number, since it is smaller than the sum of its proper divisors (73041712).

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

55125680 is a wasteful number, since it uses less digits than its factorization.

55125680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689084 (or 689078 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 55125680 is about 7424.6669958995. Note that the first 3 decimals coincide. The cubic root of 55125680 is about 380.5846954518.

The spelling of 55125680 in words is "fifty-five million, one hundred twenty-five thousand, six hundred eighty".