55421075 has 12 divisors (see below), whose sum is σ = 69037248. Its totient is φ = 44133600.

The previous prime is 55421063. The next prime is 55421111. The reversal of 55421075 is 57012455.

55421075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55421075 - 2⁶ = 55421011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 605 + ... + 10545.

It is an arithmetic number, because the mean of its divisors is an integer number (5753104).

Almost surely, 2^55421075 is an apocalyptic number.

55421075 is a deficient number, since it is larger than the sum of its proper divisors (13616173).

55421075 is a wasteful number, since it uses less digits than its factorization.

55421075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10174 (or 10169 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 55421075 is about 7444.5332291555. The cubic root of 55421075 is about 381.2632818091.

The spelling of 55421075 in words is "fifty-five million, four hundred twenty-one thousand, seventy-five".