1350509 has 2 divisors, whose sum is σ = 1350510. Its totient is φ = 1350508.

The previous prime is 1350487. The next prime is 1350511. The reversal of 1350509 is 9050531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 162409 = 1090^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350509 - 2²⁰ = 301933 is a prime.

Together with 1350511, 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 (1350709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675254 + 675255.

It is an arithmetic number, because the mean of its divisors is an integer number (675255).

2^1350509 is an apocalyptic number.

It is an amenable number.

1350509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1350509 is an equidigital number, since it uses as much as digits as its factorization.

1350509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1350509 is about 1162.1140219445. The cubic root of 1350509 is about 110.5348333771.

The spelling of 1350509 in words is "one million, three hundred fifty thousand, five hundred nine".