17157139 has 2 divisors, whose sum is σ = 17157140. Its totient is φ = 17157138.

The previous prime is 17157137. The next prime is 17157143. The reversal of 17157139 is 93175171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17157139 - 2¹ = 17157137 is a prime.

Together with 17157137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (17157137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8578569 + 8578570.

It is an arithmetic number, because the mean of its divisors is an integer number (8578570).

Almost surely, 2^17157139 is an apocalyptic number.

17157139 is a deficient number, since it is larger than the sum of its proper divisors (1).

17157139 is an equidigital number, since it uses as much as digits as its factorization.

17157139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6615, while the sum is 34.

The square root of 17157139 is about 4142.1176950927. The cubic root of 17157139 is about 257.9179826632.

The spelling of 17157139 in words is "seventeen million, one hundred fifty-seven thousand, one hundred thirty-nine".