171225696 has 24 divisors (see below), whose sum is σ = 449467704. Its totient is φ = 57075200.

The previous prime is 171225689. The next prime is 171225709. The reversal of 171225696 is 696522171.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 891705 + ... + 891896.

It is an arithmetic number, because the mean of its divisors is an integer number (18727821).

Almost surely, 2^171225696 is an apocalyptic number.

171225696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

171225696 is an abundant number, since it is smaller than the sum of its proper divisors (278242008).

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

171225696 is a wasteful number, since it uses less digits than its factorization.

171225696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783614 (or 1783606 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 171225696 is about 13085.3236872460. The cubic root of 171225696 is about 555.2939989283.

The spelling of 171225696 in words is "one hundred seventy-one million, two hundred twenty-five thousand, six hundred ninety-six".