55081895 has 16 divisors (see below), whose sum is σ = 75244032. Its totient is φ = 38316960.

The previous prime is 55081891. The next prime is 55081903. The reversal of 55081895 is 59818055.

It is not a de Polignac number, because 55081895 - 2² = 55081891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55081891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20507 + ... + 23036.

It is an arithmetic number, because the mean of its divisors is an integer number (4702752).

Almost surely, 2^55081895 is an apocalyptic number.

55081895 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55081895 is a deficient number, since it is larger than the sum of its proper divisors (20162137).

55081895 is a wasteful number, since it uses less digits than its factorization.

55081895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43582.

The product of its (nonzero) digits is 72000, while the sum is 41.

The square root of 55081895 is about 7421.7177930719. The cubic root of 55081895 is about 380.4839056762.

The spelling of 55081895 in words is "fifty-five million, eighty-one thousand, eight hundred ninety-five".