2317561 has 2 divisors, whose sum is σ = 2317562. Its totient is φ = 2317560.

The previous prime is 2317541. The next prime is 2317577. The reversal of 2317561 is 1657132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1806336 + 511225 = 1344^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 2317561 - 2⁷ = 2317433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2317501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158780 + 1158781.

It is an arithmetic number, because the mean of its divisors is an integer number (1158781).

2^2317561 is an apocalyptic number.

It is an amenable number.

2317561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2317561 is an equidigital number, since it uses as much as digits as its factorization.

2317561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 25.

The square root of 2317561 is about 1522.3537696607. The cubic root of 2317561 is about 132.3357118914.

The spelling of 2317561 in words is "two million, three hundred seventeen thousand, five hundred sixty-one".