5551280 has 80 divisors (see below), whose sum is σ = 15427584. Its totient is φ = 1816320.

The previous prime is 5551279. The next prime is 5551283. The reversal of 5551280 is 821555.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (5551283) 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, 12665 + ... + 13095.

Almost surely, 2^5551280 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 5551280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7713792).

5551280 is an abundant number, since it is smaller than the sum of its proper divisors (9876304).

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

5551280 is a wasteful number, since it uses less digits than its factorization.

5551280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 5551280 is about 2356.1154470866. The cubic root of 5551280 is about 177.0643153125.

The spelling of 5551280 in words is "five million, five hundred fifty-one thousand, two hundred eighty".