5581361 has 8 divisors (see below), whose sum is σ = 5721384. Its totient is φ = 5443200.

The previous prime is 5581351. The next prime is 5581363. The reversal of 5581361 is 1631855.

It can be written as a sum of positive squares in 4 ways, for example, as 2755600 + 2825761 = 1660^2 + 1681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5581361 is a prime.

It is a super-2 number, since 2×5581361² = 62303181224642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5581363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6995 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (715173).

Almost surely, 2^5581361 is an apocalyptic number.

It is an amenable number.

5581361 is a deficient number, since it is larger than the sum of its proper divisors (140023).

5581361 is a wasteful number, since it uses less digits than its factorization.

5581361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its digits is 3600, while the sum is 29.

The square root of 5581361 is about 2362.4904232610. The cubic root of 5581361 is about 177.3835618015.

The spelling of 5581361 in words is "five million, five hundred eighty-one thousand, three hundred sixty-one".