172200473 has 2 divisors, whose sum is σ = 172200474. Its totient is φ = 172200472.

The previous prime is 172200461. The next prime is 172200481. The reversal of 172200473 is 374002271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154828249 + 17372224 = 12443^2 + 4168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172200473 is a prime.

It is not a weakly prime, because it can be changed into another prime (172200403) by changing a digit.

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 as a sum of consecutive naturals, namely, 86100236 + 86100237.

It is an arithmetic number, because the mean of its divisors is an integer number (86100237).

Almost surely, 2^172200473 is an apocalyptic number.

It is an amenable number.

172200473 is a deficient number, since it is larger than the sum of its proper divisors (1).

172200473 is an equidigital number, since it uses as much as digits as its factorization.

172200473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 172200473 is about 13122.5177843278. The cubic root of 172200473 is about 556.3457567253.

The spelling of 172200473 in words is "one hundred seventy-two million, two hundred thousand, four hundred seventy-three".