959561 has 2 divisors, whose sum is σ = 959562. Its totient is φ = 959560.

The previous prime is 959533. The next prime is 959579. The reversal of 959561 is 165959.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 219961 = 860^2 + 469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-959561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (959461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479780 + 479781.

It is an arithmetic number, because the mean of its divisors is an integer number (479781).

2⁹⁵⁹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

959561 is a deficient number, since it is larger than the sum of its proper divisors (1).

959561 is an equidigital number, since it uses as much as digits as its factorization.

959561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12150, while the sum is 35.

The square root of 959561 is about 979.5718452467. The cubic root of 959561 is about 98.6334436375.

The spelling of 959561 in words is "nine hundred fifty-nine thousand, five hundred sixty-one".