171056507 has 2 divisors, whose sum is σ = 171056508. Its totient is φ = 171056506.

The previous prime is 171056477. The next prime is 171056521. The reversal of 171056507 is 705650171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171056507 - 2¹⁰ = 171055483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (171056527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85528253 + 85528254.

It is an arithmetic number, because the mean of its divisors is an integer number (85528254).

Almost surely, 2^171056507 is an apocalyptic number.

171056507 is a deficient number, since it is larger than the sum of its proper divisors (1).

171056507 is an equidigital number, since it uses as much as digits as its factorization.

171056507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 171056507 is about 13078.8572513045. The cubic root of 171056507 is about 555.1110423597. Note that the first 3 decimals are identical.

The spelling of 171056507 in words is "one hundred seventy-one million, fifty-six thousand, five hundred seven".