55598976 has 144 divisors (see below), whose sum is σ = 170974440. Its totient is φ = 17338368.

The previous prime is 55598971. The next prime is 55598987. The reversal of 55598976 is 67989555.

It is a happy number.

55598976 is a `hidden beast` number, since 5 + 559 + 89 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×55598976² = 6182492264497152, which contains 22 as substring.

Its product of digits (3402000) is a multiple of the sum of its prime divisors (189).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55598971) 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 17 ways as a sum of consecutive naturals, for example, 332845 + ... + 333011.

Almost surely, 2^55598976 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 55598976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85487220).

55598976 is an abundant number, since it is smaller than the sum of its proper divisors (115375464).

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

55598976 is a wasteful number, since it uses less digits than its factorization.

55598976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 189 counting only the distinct ones).

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

The square root of 55598976 is about 7456.4720880588. The cubic root of 55598976 is about 381.6707963000.

It can be divided in two parts, 5559 and 8976, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 55598976 in words is "fifty-five million, five hundred ninety-eight thousand, nine hundred seventy-six".