975509 has 2 divisors, whose sum is σ = 975510. Its totient is φ = 975508.

The previous prime is 975497. The next prime is 975521. The reversal of 975509 is 905579.

It is a balanced prime because it is at equal distance from previous prime (975497) and next prime (975521).

It can be written as a sum of positive squares in only one way, i.e., 722500 + 253009 = 850^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 975509 - 2⁴ = 975493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (975599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487754 + 487755.

It is an arithmetic number, because the mean of its divisors is an integer number (487755).

2⁹⁷⁵⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

975509 is a deficient number, since it is larger than the sum of its proper divisors (1).

975509 is an equidigital number, since it uses as much as digits as its factorization.

975509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14175, while the sum is 35.

The square root of 975509 is about 987.6785914456. The cubic root of 975509 is about 99.1768766018.

The spelling of 975509 in words is "nine hundred seventy-five thousand, five hundred nine".