522045217 has 2 divisors, whose sum is σ = 522045218. Its totient is φ = 522045216.

The previous prime is 522045187. The next prime is 522045233. The reversal of 522045217 is 712540225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518199696 + 3845521 = 22764^2 + 1961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522045217 is a prime.

It is not a weakly prime, because it can be changed into another prime (522043217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261022608 + 261022609.

It is an arithmetic number, because the mean of its divisors is an integer number (261022609).

Almost surely, 2^522045217 is an apocalyptic number.

It is an amenable number.

522045217 is a deficient number, since it is larger than the sum of its proper divisors (1).

522045217 is an equidigital number, since it uses as much as digits as its factorization.

522045217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 522045217 is about 22848.3088433258. The cubic root of 522045217 is about 805.1980362280.

The spelling of 522045217 in words is "five hundred twenty-two million, forty-five thousand, two hundred seventeen".