171099413 has 2 divisors, whose sum is σ = 171099414. Its totient is φ = 171099412.

The previous prime is 171099329. The next prime is 171099431. The reversal of 171099413 is 314990171.

It is a happy number.

Together with next prime (171099431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156300004 + 14799409 = 12502^2 + 3847^2 .

It is a cyclic number.

It is not a de Polignac number, because 171099413 - 2¹⁸ = 170837269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171099463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85549706 + 85549707.

It is an arithmetic number, because the mean of its divisors is an integer number (85549707).

Almost surely, 2^171099413 is an apocalyptic number.

It is an amenable number.

171099413 is a deficient number, since it is larger than the sum of its proper divisors (1).

171099413 is an equidigital number, since it uses as much as digits as its factorization.

171099413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 171099413 is about 13080.4974293794. The cubic root of 171099413 is about 555.1574512018.

The spelling of 171099413 in words is "one hundred seventy-one million, ninety-nine thousand, four hundred thirteen".