217467049 has 2 divisors, whose sum is σ = 217467050. Its totient is φ = 217467048.

The previous prime is 217467037. The next prime is 217467067. The reversal of 217467049 is 940764712.

217467049 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., 208658025 + 8809024 = 14445^2 + 2968^2 .

It is a cyclic number.

It is not a de Polignac number, because 217467049 - 2⁹ = 217466537 is a prime.

It is not a weakly prime, because it can be changed into another prime (217467149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108733524 + 108733525.

It is an arithmetic number, because the mean of its divisors is an integer number (108733525).

Almost surely, 2^217467049 is an apocalyptic number.

It is an amenable number.

217467049 is a deficient number, since it is larger than the sum of its proper divisors (1).

217467049 is an equidigital number, since it uses as much as digits as its factorization.

217467049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 217467049 is about 14746.7640179125. The cubic root of 217467049 is about 601.3553149343.

The spelling of 217467049 in words is "two hundred seventeen million, four hundred sixty-seven thousand, forty-nine".