171555648 has 112 divisors (see below), whose sum is σ = 512429760. Its totient is φ = 50176000.

The previous prime is 171555641. The next prime is 171555661. The reversal of 171555648 is 846555171.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171555641) 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 15 ways as a sum of consecutive naturals, for example, 59848 + ... + 62648.

Almost surely, 2^171555648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171555648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256214880).

171555648 is an abundant number, since it is smaller than the sum of its proper divisors (340874112).

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

171555648 is a wasteful number, since it uses less digits than its factorization.

171555648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856 (or 2846 counting only the distinct ones).

The product of its digits is 168000, while the sum is 42.

The square root of 171555648 is about 13097.9253318989. The cubic root of 171555648 is about 555.6504539992.

The spelling of 171555648 in words is "one hundred seventy-one million, five hundred fifty-five thousand, six hundred forty-eight".