55249790 has 16 divisors (see below), whose sum is σ = 99672768. Its totient is φ = 22050336.

The previous prime is 55249787. The next prime is 55249801. The reversal of 55249790 is 9794255.

It is a Curzon number.

It is a congruent number.

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, 1337 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (6229548).

Almost surely, 2^55249790 is an apocalyptic number.

55249790 is a deficient number, since it is larger than the sum of its proper divisors (44422978).

55249790 is a wasteful number, since it uses less digits than its factorization.

55249790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 55249790 is about 7433.0202475172. The cubic root of 55249790 is about 380.8700976031.

The spelling of 55249790 in words is "fifty-five million, two hundred forty-nine thousand, seven hundred ninety".