73047217 has 2 divisors, whose sum is σ = 73047218. Its totient is φ = 73047216.

The previous prime is 73047211. The next prime is 73047223. The reversal of 73047217 is 71274037.

It is a balanced prime because it is at equal distance from previous prime (73047211) and next prime (73047223).

It can be written as a sum of positive squares in only one way, i.e., 47554816 + 25492401 = 6896^2 + 5049^2 .

It is a cyclic number.

It is not a de Polignac number, because 73047217 - 2⁷ = 73047089 is a prime.

It is a super-2 number, since 2×73047217² = 10671791822890178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73047211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36523608 + 36523609.

It is an arithmetic number, because the mean of its divisors is an integer number (36523609).

Almost surely, 2^73047217 is an apocalyptic number.

It is an amenable number.

73047217 is a deficient number, since it is larger than the sum of its proper divisors (1).

73047217 is an equidigital number, since it uses as much as digits as its factorization.

73047217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 73047217 is about 8546.7664645759. The cubic root of 73047217 is about 418.0240079157.

The spelling of 73047217 in words is "seventy-three million, forty-seven thousand, two hundred seventeen".