170473321 has 2 divisors, whose sum is σ = 170473322. Its totient is φ = 170473320.

The previous prime is 170473291. The next prime is 170473333. The reversal of 170473321 is 123374071.

170473321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122323600 + 48149721 = 11060^2 + 6939^2 .

It is an emirp because it is prime and its reverse (123374071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170473321 - 2¹³ = 170465129 is a prime.

It is a super-2 number, since 2×170473321² = 58122306345538082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 170473321.

It is not a weakly prime, because it can be changed into another prime (170473021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85236660 + 85236661.

It is an arithmetic number, because the mean of its divisors is an integer number (85236661).

Almost surely, 2^170473321 is an apocalyptic number.

It is an amenable number.

170473321 is a deficient number, since it is larger than the sum of its proper divisors (1).

170473321 is an equidigital number, since it uses as much as digits as its factorization.

170473321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 170473321 is about 13056.5432255249. The cubic root of 170473321 is about 554.4794740837.

The spelling of 170473321 in words is "one hundred seventy million, four hundred seventy-three thousand, three hundred twenty-one".