55846990 has 16 divisors (see below), whose sum is σ = 104895648. Its totient is φ = 21367456.

The previous prime is 55846963. The next prime is 55846993. The reversal of 55846990 is 9964855.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 55846990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55846993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121177 + ... + 121636.

It is an arithmetic number, because the mean of its divisors is an integer number (6555978).

Almost surely, 2^55846990 is an apocalyptic number.

55846990 is a deficient number, since it is larger than the sum of its proper divisors (49048658).

55846990 is a wasteful number, since it uses less digits than its factorization.

55846990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242843.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 55846990 is about 7473.0843699238. The cubic root of 55846990 is about 382.2374691890.

The spelling of 55846990 in words is "fifty-five million, eight hundred forty-six thousand, nine hundred ninety".