55228775 has 12 divisors (see below), whose sum is σ = 78267312. Its totient is φ = 37871040.

The previous prime is 55228759. The next prime is 55228783. The reversal of 55228775 is 57782255.

It is not a de Polignac number, because 55228775 - 2⁴ = 55228759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157622 + ... + 157971.

It is an arithmetic number, because the mean of its divisors is an integer number (6522276).

Almost surely, 2^55228775 is an apocalyptic number.

55228775 is a deficient number, since it is larger than the sum of its proper divisors (23038537).

55228775 is a wasteful number, since it uses less digits than its factorization.

55228775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315610 (or 315605 counting only the distinct ones).

The product of its digits is 196000, while the sum is 41.

The square root of 55228775 is about 7431.6064885057. The cubic root of 55228775 is about 380.8218017928.

The spelling of 55228775 in words is "fifty-five million, two hundred twenty-eight thousand, seven hundred seventy-five".