5539081 has 2 divisors, whose sum is σ = 5539082. Its totient is φ = 5539080.

The previous prime is 5539063. The next prime is 5539123. The reversal of 5539081 is 1809355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4239481 + 1299600 = 2059^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 5539081 - 2⁹ = 5538569 is a prime.

It is a super-2 number, since 2×5539081² = 61362836649122, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5539181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769540 + 2769541.

It is an arithmetic number, because the mean of its divisors is an integer number (2769541).

Almost surely, 2^5539081 is an apocalyptic number.

5539081 is the 1489-th centered pentagonal number.

It is an amenable number.

5539081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5539081 is an equidigital number, since it uses as much as digits as its factorization.

5539081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 5539081 is about 2353.5252282480. The cubic root of 5539081 is about 176.9345199181.

The spelling of 5539081 in words is "five million, five hundred thirty-nine thousand, eighty-one".