975581 has 2 divisors, whose sum is σ = 975582. Its totient is φ = 975580.

The previous prime is 975553. The next prime is 975599. The reversal of 975581 is 185579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749956 + 225625 = 866^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 975581 - 2¹⁰ = 974557 is a prime.

It is a super-2 number, since 2×975581² = 1903516575122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 975581.

It is not a weakly prime, because it can be changed into another prime (975521) 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, 487790 + 487791.

It is an arithmetic number, because the mean of its divisors is an integer number (487791).

2⁹⁷⁵⁵⁸¹ is an apocalyptic number.

It is an amenable number.

975581 is a deficient number, since it is larger than the sum of its proper divisors (1).

975581 is an equidigital number, since it uses as much as digits as its factorization.

975581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 35.

The square root of 975581 is about 987.7150398774. The cubic root of 975581 is about 99.1793165449.

The spelling of 975581 in words is "nine hundred seventy-five thousand, five hundred eighty-one".