973561 has 2 divisors, whose sum is σ = 973562. Its totient is φ = 973560.

The previous prime is 973547. The next prime is 973591. The reversal of 973561 is 165379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 765625 + 207936 = 875^2 + 456^2 .

It is an emirp because it is prime and its reverse (165379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 973561 - 2⁵ = 973529 is a prime.

It is not a weakly prime, because it can be changed into another prime (973591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486780 + 486781.

It is an arithmetic number, because the mean of its divisors is an integer number (486781).

2⁹⁷³⁵⁶¹ is an apocalyptic number.

It is an amenable number.

973561 is a deficient number, since it is larger than the sum of its proper divisors (1).

973561 is an equidigital number, since it uses as much as digits as its factorization.

973561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 973561 is about 986.6919478743. The cubic root of 973561 is about 99.1108169697.

The spelling of 973561 in words is "nine hundred seventy-three thousand, five hundred sixty-one".