171226656 has 48 divisors (see below), whose sum is σ = 499413600. Its totient is φ = 57075264.

The previous prime is 171226637. The next prime is 171226663. The reversal of 171226656 is 656622171.

It is a happy number.

171226656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 171226656.

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, 98226 + ... + 99953.

It is an arithmetic number, because the mean of its divisors is an integer number (10404450).

Almost surely, 2^171226656 is an apocalyptic number.

171226656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

171226656 is an abundant number, since it is smaller than the sum of its proper divisors (328186944).

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

171226656 is a wasteful number, since it uses less digits than its factorization.

171226656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198198 (or 198184 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 171226656 is about 13085.3603695122. The cubic root of 171226656 is about 555.2950367033.

The spelling of 171226656 in words is "one hundred seventy-one million, two hundred twenty-six thousand, six hundred fifty-six".