55028480 has 72 divisors (see below), whose sum is σ = 141992592. Its totient is φ = 20312064.

The previous prime is 55028461. The next prime is 55028497. The reversal of 55028480 is 8482055.

It is a super-2 number, since 2×55028480² = 6056267222220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 7 ways as a sum of consecutive naturals, for example, 14987 + ... + 18293.

Almost surely, 2^55028480 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 55028480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70996296).

55028480 is an abundant number, since it is smaller than the sum of its proper divisors (86964112).

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

55028480 is a wasteful number, since it uses less digits than its factorization.

55028480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 55028480 is about 7418.1183597999. The cubic root of 55028480 is about 380.3608760136.

The spelling of 55028480 in words is "fifty-five million, twenty-eight thousand, four hundred eighty".