875106509 has 2 divisors, whose sum is σ = 875106510. Its totient is φ = 875106508.

The previous prime is 875106469. The next prime is 875106511. The reversal of 875106509 is 905601578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595213609 + 279892900 = 24397^2 + 16730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-875106509 is a prime.

It is a super-2 number, since 2×875106509² = 1531622804188334162, which contains 22 as substring.

Together with 875106511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (875106559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437553254 + 437553255.

It is an arithmetic number, because the mean of its divisors is an integer number (437553255).

Almost surely, 2^875106509 is an apocalyptic number.

It is an amenable number.

875106509 is a deficient number, since it is larger than the sum of its proper divisors (1).

875106509 is an equidigital number, since it uses as much as digits as its factorization.

875106509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 875106509 is about 29582.1991914056. The cubic root of 875106509 is about 956.5043982664.

The spelling of 875106509 in words is "eight hundred seventy-five million, one hundred six thousand, five hundred nine".