55190109 has 16 divisors (see below), whose sum is σ = 83909952. Its totient is φ = 31964928.

The previous prime is 55190101. The next prime is 55190167. The reversal of 55190109 is 90109155.

It is not a de Polignac number, because 55190109 - 2³ = 55190101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55190101) 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, 40959 + ... + 42284.

It is an arithmetic number, because the mean of its divisors is an integer number (5244372).

Almost surely, 2^55190109 is an apocalyptic number.

It is an amenable number.

55190109 is a deficient number, since it is larger than the sum of its proper divisors (28719843).

55190109 is a wasteful number, since it uses less digits than its factorization.

55190109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83276.

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 55190109 is about 7429.0045766576. The cubic root of 55190109 is about 380.7329091613.

The spelling of 55190109 in words is "fifty-five million, one hundred ninety thousand, one hundred nine".