55185895 has 8 divisors (see below), whose sum is σ = 66879360. Its totient is φ = 43711200.

The previous prime is 55185887. The next prime is 55185913. The reversal of 55185895 is 59858155.

It is a happy number.

55185895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55185895 - 2³ = 55185887 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 54135 + ... + 55144.

It is an arithmetic number, because the mean of its divisors is an integer number (8359920).

Almost surely, 2^55185895 is an apocalyptic number.

55185895 is a deficient number, since it is larger than the sum of its proper divisors (11693465).

55185895 is a wasteful number, since it uses less digits than its factorization.

55185895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109385.

The product of its digits is 360000, while the sum is 46.

The square root of 55185895 is about 7428.7209531655. The cubic root of 55185895 is about 380.7232187213.

The spelling of 55185895 in words is "fifty-five million, one hundred eighty-five thousand, eight hundred ninety-five".