55986500 has 24 divisors (see below), whose sum is σ = 122275608. Its totient is φ = 22394400.

The previous prime is 55986499. The next prime is 55986517. The reversal of 55986500 is 568955.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 52330756 = 1912^2 + 7234^2 .

It is an unprimeable number.

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, 55487 + ... + 56486.

It is an arithmetic number, because the mean of its divisors is an integer number (5094817).

Almost surely, 2^55986500 is an apocalyptic number.

55986500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55986500 is an abundant number, since it is smaller than the sum of its proper divisors (66289108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55986500 is a wasteful number, since it uses less digits than its factorization.

55986500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111992 (or 111980 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 55986500 is about 7482.4127124879. The cubic root of 55986500 is about 382.5554905468. Note that the first 3 decimals are identical.

The spelling of 55986500 in words is "fifty-five million, nine hundred eighty-six thousand, five hundred".