55445892 has 12 divisors (see below), whose sum is σ = 129373776. Its totient is φ = 18481960.

The previous prime is 55445867. The next prime is 55445953. The reversal of 55445892 is 29854455.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310234 + ... + 2310257.

It is an arithmetic number, because the mean of its divisors is an integer number (10781148).

Almost surely, 2^55445892 is an apocalyptic number.

It is an amenable number.

55445892 is an abundant number, since it is smaller than the sum of its proper divisors (73927884).

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

55445892 is a wasteful number, since it uses less digits than its factorization.

55445892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620498 (or 4620496 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 55445892 is about 7446.1998361580. The cubic root of 55445892 is about 381.3201819379.

The spelling of 55445892 in words is "fifty-five million, four hundred forty-five thousand, eight hundred ninety-two".