5579981 has 16 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 4830000.

The previous prime is 5579963. The next prime is 5579983. The reversal of 5579981 is 1899755.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5579981 is a prime.

It is a super-2 number, since 2×5579981² = 62272375920722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5579983) 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 15 ways as a sum of consecutive naturals, for example, 22106 + ... + 22356.

It is an arithmetic number, because the mean of its divisors is an integer number (399168).

Almost surely, 2^5579981 is an apocalyptic number.

It is an amenable number.

5579981 is a deficient number, since it is larger than the sum of its proper divisors (806707).

5579981 is a wasteful number, since it uses less digits than its factorization.

5579981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its digits is 113400, while the sum is 44.

The square root of 5579981 is about 2362.1983405294. The cubic root of 5579981 is about 177.3689411445.

The spelling of 5579981 in words is "five million, five hundred seventy-nine thousand, nine hundred eighty-one".