55589976 has 80 divisors (see below), whose sum is σ = 167706000. Its totient is φ = 17102016.

The previous prime is 55589957. The next prime is 55589993. The reversal of 55589976 is 67998555.

It is a happy number.

55589976 is a `hidden beast` number, since 55 + 589 + 9 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 5125 + ... + 11723.

It is an arithmetic number, because the mean of its divisors is an integer number (2096325).

Almost surely, 2^55589976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55589976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83853000).

55589976 is an abundant number, since it is smaller than the sum of its proper divisors (112116024).

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

55589976 is a wasteful number, since it uses less digits than its factorization.

55589976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630 (or 6617 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The square root of 55589976 is about 7455.8685610732. The cubic root of 55589976 is about 381.6502010614.

It can be divided in two parts, 55589 and 976, that added together give a palindrome (56565).

The spelling of 55589976 in words is "fifty-five million, five hundred eighty-nine thousand, nine hundred seventy-six".