172194361 has 2 divisors, whose sum is σ = 172194362. Its totient is φ = 172194360.

The previous prime is 172194329. The next prime is 172194409. The reversal of 172194361 is 163491271.

172194361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119486761 + 52707600 = 10931^2 + 7260^2 .

It is a cyclic number.

It is not a de Polignac number, because 172194361 - 2⁵ = 172194329 is a prime.

It is not a weakly prime, because it can be changed into another prime (172194461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86097180 + 86097181.

It is an arithmetic number, because the mean of its divisors is an integer number (86097181).

Almost surely, 2^172194361 is an apocalyptic number.

It is an amenable number.

172194361 is a deficient number, since it is larger than the sum of its proper divisors (1).

172194361 is an equidigital number, since it uses as much as digits as its factorization.

172194361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 172194361 is about 13122.2849001231. The cubic root of 172194361 is about 556.3391744253.

The spelling of 172194361 in words is "one hundred seventy-two million, one hundred ninety-four thousand, three hundred sixty-one".