54989280 has 120 divisors (see below), whose sum is σ = 194112072. Its totient is φ = 14660352.

The previous prime is 54989279. The next prime is 54989299. The reversal of 54989280 is 8298945.

54989280 is a `hidden beast` number, since 549 + 89 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 10839 + ... + 15081.

Almost surely, 2^54989280 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 54989280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97056036).

54989280 is an abundant number, since it is smaller than the sum of its proper divisors (139122792).

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

54989280 is a wasteful number, since it uses less digits than its factorization.

54989280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270 (or 4253 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 54989280 is about 7415.4757096224. The cubic root of 54989280 is about 380.2705368038.

The spelling of 54989280 in words is "fifty-four million, nine hundred eighty-nine thousand, two hundred eighty".