55500480 has 168 divisors, whose sum is σ = 218248992. Its totient is φ = 12681216.

The previous prime is 55500469. The next prime is 55500493. The reversal of 55500480 is 8400555.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18784 + ... + 21536.

Almost surely, 2^55500480 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 55500480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109124496).

55500480 is an abundant number, since it is smaller than the sum of its proper divisors (162748512).

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

55500480 is a wasteful number, since it uses less digits than its factorization.

55500480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 55500480 is about 7449.8644282967. The cubic root of 55500480 is about 381.4452809484.

The spelling of 55500480 in words is "fifty-five million, five hundred thousand, four hundred eighty".