5531161 has 2 divisors, whose sum is σ = 5531162. Its totient is φ = 5531160.

The previous prime is 5531159. The next prime is 5531173. The reversal of 5531161 is 1611355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4756761 + 774400 = 2181^2 + 880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5531161 - 2¹ = 5531159 is a prime.

Together with 5531159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5531131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765580 + 2765581.

It is an arithmetic number, because the mean of its divisors is an integer number (2765581).

Almost surely, 2^5531161 is an apocalyptic number.

It is an amenable number.

5531161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5531161 is an equidigital number, since it uses as much as digits as its factorization.

5531161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 22.

The square root of 5531161 is about 2351.8420440157. The cubic root of 5531161 is about 176.8501503378.

The spelling of 5531161 in words is "five million, five hundred thirty-one thousand, one hundred sixty-one".