55604988 has 48 divisors (see below), whose sum is σ = 145071360. Its totient is φ = 18418032.

The previous prime is 55604987. The next prime is 55604993. The reversal of 55604988 is 88940655.

55604988 is a `hidden beast` number, since 5 + 560 + 4 + 9 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55604987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16495 + ... + 19577.

It is an arithmetic number, because the mean of its divisors is an integer number (3022320).

Almost surely, 2^55604988 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 55604988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72535680).

55604988 is an abundant number, since it is smaller than the sum of its proper divisors (89466372).

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

55604988 is a wasteful number, since it uses less digits than its factorization.

55604988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 55604988 is about 7456.8752168720. The cubic root of 55604988 is about 381.6845526812.

The spelling of 55604988 in words is "fifty-five million, six hundred four thousand, nine hundred eighty-eight".