171075479 has 2 divisors, whose sum is σ = 171075480. Its totient is φ = 171075478.

The previous prime is 171075473. The next prime is 171075497. The reversal of 171075479 is 974570171.

Together with next prime (171075497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171075479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171075473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85537739 + 85537740.

It is an arithmetic number, because the mean of its divisors is an integer number (85537740).

Almost surely, 2^171075479 is an apocalyptic number.

171075479 is a deficient number, since it is larger than the sum of its proper divisors (1).

171075479 is an equidigital number, since it uses as much as digits as its factorization.

171075479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 41.

The square root of 171075479 is about 13079.5825239187. The cubic root of 171075479 is about 555.1315641891.

The spelling of 171075479 in words is "one hundred seventy-one million, seventy-five thousand, four hundred seventy-nine".