171155560 has 32 divisors (see below), whose sum is σ = 386273160. Its totient is φ = 68253696.

The previous prime is 171155531. The next prime is 171155573. The reversal of 171155560 is 65551171.

It can be written as a sum of positive squares in 4 ways, for example, as 93045316 + 78110244 = 9646^2 + 8838^2 .

It is a super-6 number, since 6×171155560⁶ (a number of 51 digits) contains 666666 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7132 + ... + 19828.

Almost surely, 2^171155560 is an apocalyptic number.

171155560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171155560 is an abundant number, since it is smaller than the sum of its proper divisors (215117600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171155560 is a wasteful number, since it uses less digits than its factorization.

171155560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13045 (or 13041 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 171155560 is about 13082.6434637653. The cubic root of 171155560 is about 555.2181703200.

The spelling of 171155560 in words is "one hundred seventy-one million, one hundred fifty-five thousand, five hundred sixty".