5581161 has 12 divisors (see below), whose sum is σ = 8102640. Its totient is φ = 3701880.

The previous prime is 5581141. The next prime is 5581171. The reversal of 5581161 is 1611855.

It is not a de Polignac number, because 5581161 - 2⁵ = 5581129 is a prime.

It is a super-2 number, since 2×5581161² = 62298716215842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5581141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (675220).

Almost surely, 2^5581161 is an apocalyptic number.

It is an amenable number.

5581161 is a deficient number, since it is larger than the sum of its proper divisors (2521479).

5581161 is a wasteful number, since it uses less digits than its factorization.

5581161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156 (or 3153 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 5581161 is about 2362.4480946679. The cubic root of 5581161 is about 177.3814430150.

The spelling of 5581161 in words is "five million, five hundred eighty-one thousand, one hundred sixty-one".