3199561 has 2 divisors, whose sum is σ = 3199562. Its totient is φ = 3199560.

The previous prime is 3199549. The next prime is 3199571. The reversal of 3199561 is 1659913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 1336336 = 1365^2 + 1156^2 .

It is an emirp because it is prime and its reverse (1659913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3199561 - 2⁷ = 3199433 is a prime.

It is not a weakly prime, because it can be changed into another prime (3199571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599780 + 1599781.

It is an arithmetic number, because the mean of its divisors is an integer number (1599781).

Almost surely, 2^3199561 is an apocalyptic number.

It is an amenable number.

3199561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3199561 is an equidigital number, since it uses as much as digits as its factorization.

3199561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 34.

The square root of 3199561 is about 1788.7316735609. The cubic root of 3199561 is about 147.3545209298.

The spelling of 3199561 in words is "three million, one hundred ninety-nine thousand, five hundred sixty-one".