171191056 has 15 divisors (see below), whose sum is σ = 331784103. Its totient is φ = 85569360.

The previous prime is 171191039. The next prime is 171191063. The reversal of 171191056 is 650191171.

The square root of 171191056 is 13084.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 50701 + ... + 53971.

Almost surely, 2^171191056 is an apocalyptic number.

171191056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

171191056 is the 13084-th square number.

It is an amenable number.

171191056 is a deficient number, since it is larger than the sum of its proper divisors (160593047).

171191056 is an frugal number, since it uses more digits than its factorization.

171191056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550 (or 3273 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 31.

The cubic root of 171191056 is about 555.2565499514.

The spelling of 171191056 in words is "one hundred seventy-one million, one hundred ninety-one thousand, fifty-six".