55988 has 6 divisors (see below), whose sum is σ = 97986. Its totient is φ = 27992.

The previous prime is 55987. The next prime is 55997. The reversal of 55988 is 88955.

55988 is nontrivially palindromic in base 5.

It can be written as a sum of positive squares in only one way, i.e., 47524 + 8464 = 218^2 + 92^2 .

It is a super-2 number, since 2×55988² = 6269312288, which contains 22 as substring.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6995 + ... + 7002.

It is an arithmetic number, because the mean of its divisors is an integer number (16331).

2⁵⁵⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

55988 is a deficient number, since it is larger than the sum of its proper divisors (41998).

55988 is a wasteful number, since it uses less digits than its factorization.

55988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14001 (or 13999 counting only the distinct ones).

The product of its digits is 14400, while the sum is 35.

The square root of 55988 is about 236.6178353379. The cubic root of 55988 is about 38.2558907014.

The spelling of 55988 in words is "fifty-five thousand, nine hundred eighty-eight".