171199445 has 4 divisors (see below), whose sum is σ = 205439340. Its totient is φ = 136959552.

The previous prime is 171199439. The next prime is 171199459. The reversal of 171199445 is 544991171.

171199445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19589476 + 151609969 = 4426^2 + 12313^2 .

It is a cyclic number.

It is not a de Polignac number, because 171199445 - 2²² = 167005141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17119940 + ... + 17119949.

It is an arithmetic number, because the mean of its divisors is an integer number (51359835).

Almost surely, 2^171199445 is an apocalyptic number.

It is an amenable number.

171199445 is a deficient number, since it is larger than the sum of its proper divisors (34239895).

171199445 is an equidigital number, since it uses as much as digits as its factorization.

171199445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34239894.

The product of its digits is 45360, while the sum is 41.

The square root of 171199445 is about 13084.3205784634. The cubic root of 171199445 is about 555.2656196836.

The spelling of 171199445 in words is "one hundred seventy-one million, one hundred ninety-nine thousand, four hundred forty-five".