5581746 has 72 divisors (see below), whose sum is σ = 13649220. Its totient is φ = 1645056.

The previous prime is 5581739. The next prime is 5581747. The reversal of 5581746 is 6471855.

5581746 is a `hidden beast` number, since 5 + 581 + 74 + 6 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5239521 + 342225 = 2289^2 + 585^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5581746.

It is not an unprimeable number, because it can be changed into a prime (5581747) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 150840 + ... + 150876.

Almost surely, 2^5581746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5581746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6824610).

5581746 is an abundant number, since it is smaller than the sum of its proper divisors (8067474).

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

5581746 is a wasteful number, since it uses less digits than its factorization.

5581746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 88 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 5581746 is about 2362.5719036677. The cubic root of 5581746 is about 177.3876403229.

It can be divided in two parts, 558 and 1746, that added together give a square (2304 = 48²).

The spelling of 5581746 in words is "five million, five hundred eighty-one thousand, seven hundred forty-six".