171220449 has 8 divisors (see below), whose sum is σ = 228507552. Its totient is φ = 114040160.

The previous prime is 171220429. The next prime is 171220459. The reversal of 171220449 is 944022171.

171220449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171220449 - 2⁸ = 171220193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171220429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22884 + ... + 29429.

It is an arithmetic number, because the mean of its divisors is an integer number (28563444).

Almost surely, 2^171220449 is an apocalyptic number.

It is an amenable number.

171220449 is a deficient number, since it is larger than the sum of its proper divisors (57287103).

171220449 is a wasteful number, since it uses less digits than its factorization.

171220449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53407.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 171220449 is about 13085.1231939176. The cubic root of 171220449 is about 555.2883267708.

The spelling of 171220449 in words is "one hundred seventy-one million, two hundred twenty thousand, four hundred forty-nine".