171056497 has 8 divisors (see below), whose sum is σ = 179040960. Its totient is φ = 163117680.

The previous prime is 171056477. The next prime is 171056507. The reversal of 171056497 is 794650171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171056497 is a prime.

It is a super-2 number, since 2×171056497² = 58520650331822018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171056437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3622 + ... + 18847.

It is an arithmetic number, because the mean of its divisors is an integer number (22380120).

Almost surely, 2^171056497 is an apocalyptic number.

It is an amenable number.

171056497 is a deficient number, since it is larger than the sum of its proper divisors (7984463).

171056497 is a wasteful number, since it uses less digits than its factorization.

171056497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22823.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 171056497 is about 13078.8568690081. The cubic root of 171056497 is about 555.1110315424. Note that the first 3 decimals are identical.

The spelling of 171056497 in words is "one hundred seventy-one million, fifty-six thousand, four hundred ninety-seven".