5581520 has 40 divisors (see below), whose sum is σ = 14832384. Its totient is φ = 1913472.

The previous prime is 5581493. The next prime is 5581531. The reversal of 5581520 is 251855.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 5581520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4424 + ... + 5543.

Almost surely, 2^5581520 is an apocalyptic number.

It is an amenable number.

5581520 is an abundant number, since it is smaller than the sum of its proper divisors (9250864).

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

5581520 is a wasteful number, since it uses less digits than its factorization.

5581520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9987 (or 9981 counting only the distinct ones).

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

The square root of 5581520 is about 2362.5240739514. The cubic root of 5581520 is about 177.3852462006.

The spelling of 5581520 in words is "five million, five hundred eighty-one thousand, five hundred twenty".