55193228 has 24 divisors (see below), whose sum is σ = 99271872. Its totient is φ = 26837504.

The previous prime is 55193219. The next prime is 55193231. The reversal of 55193228 is 82239155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31676 + ... + 33372.

It is an arithmetic number, because the mean of its divisors is an integer number (4136328).

Almost surely, 2^55193228 is an apocalyptic number.

It is an amenable number.

55193228 is a deficient number, since it is larger than the sum of its proper divisors (44078644).

55193228 is a wasteful number, since it uses less digits than its factorization.

55193228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1919 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 55193228 is about 7429.2144941440. The cubic root of 55193228 is about 380.7400812409.

The spelling of 55193228 in words is "fifty-five million, one hundred ninety-three thousand, two hundred twenty-eight".