55081838 has 32 divisors (see below), whose sum is σ = 97542144. Its totient is φ = 22839552.

The previous prime is 55081811. The next prime is 55081843. The reversal of 55081838 is 83818055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63395 + ... + 64257.

It is an arithmetic number, because the mean of its divisors is an integer number (3048192).

Almost surely, 2^55081838 is an apocalyptic number.

55081838 is a deficient number, since it is larger than the sum of its proper divisors (42460306).

55081838 is a wasteful number, since it uses less digits than its factorization.

55081838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 55081838 is about 7421.7139529896. The cubic root of 55081838 is about 380.4837744317.

The spelling of 55081838 in words is "fifty-five million, eighty-one thousand, eight hundred thirty-eight".