5581872 has 100 divisors (see below), whose sum is σ = 16654440. Its totient is φ = 1804032.

The previous prime is 5581871. The next prime is 5581897. The reversal of 5581872 is 2781855.

5581872 is a `hidden beast` number, since 5 + 581 + 8 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5581871) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 76428 + ... + 76500.

Almost surely, 2^5581872 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 5581872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8327220).

5581872 is an abundant number, since it is smaller than the sum of its proper divisors (11072568).

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

5581872 is a wasteful number, since it uses less digits than its factorization.

5581872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 137 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 5581872 is about 2362.5985693723. The cubic root of 5581872 is about 177.3889750710.

The spelling of 5581872 in words is "five million, five hundred eighty-one thousand, eight hundred seventy-two".