34157509 has 2 divisors, whose sum is σ = 34157510. Its totient is φ = 34157508.

The previous prime is 34157489. The next prime is 34157521. The reversal of 34157509 is 90575143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31192225 + 2965284 = 5585^2 + 1722^2 .

It is a cyclic number.

It is not a de Polignac number, because 34157509 - 2⁵ = 34157477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34157569) 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, 17078754 + 17078755.

It is an arithmetic number, because the mean of its divisors is an integer number (17078755).

Almost surely, 2^34157509 is an apocalyptic number.

It is an amenable number.

34157509 is a deficient number, since it is larger than the sum of its proper divisors (1).

34157509 is an equidigital number, since it uses as much as digits as its factorization.

34157509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 34157509 is about 5844.4425739329. The cubic root of 34157509 is about 324.4606723611.

The spelling of 34157509 in words is "thirty-four million, one hundred fifty-seven thousand, five hundred nine".