522146489 has 2 divisors, whose sum is σ = 522146490. Its totient is φ = 522146488.

The previous prime is 522146431. The next prime is 522146497. The reversal of 522146489 is 984641225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519612025 + 2534464 = 22795^2 + 1592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522146489 is a prime.

It is a Chen prime.

It is equal to p_27459437 and since 522146489 and 27459437 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (522146419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261073244 + 261073245.

It is an arithmetic number, because the mean of its divisors is an integer number (261073245).

Almost surely, 2^522146489 is an apocalyptic number.

It is an amenable number.

522146489 is a deficient number, since it is larger than the sum of its proper divisors (1).

522146489 is an equidigital number, since it uses as much as digits as its factorization.

522146489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 522146489 is about 22850.5249173843. The cubic root of 522146489 is about 805.2500998810.

The spelling of 522146489 in words is "five hundred twenty-two million, one hundred forty-six thousand, four hundred eighty-nine".