522749 has 2 divisors, whose sum is σ = 522750. Its totient is φ = 522748.

The previous prime is 522737. The next prime is 522757. The reversal of 522749 is 947225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515524 + 7225 = 718^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 522749 - 2¹⁶ = 457213 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522749.

It is not a weakly prime, because it can be changed into another prime (522719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261374 + 261375.

It is an arithmetic number, because the mean of its divisors is an integer number (261375).

2⁵²²⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

522749 is a deficient number, since it is larger than the sum of its proper divisors (1).

522749 is an equidigital number, since it uses as much as digits as its factorization.

522749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 522749 is about 723.0138311263. The cubic root of 522749 is about 80.5559710024. Note that the first 3 decimals are identical.

The spelling of 522749 in words is "five hundred twenty-two thousand, seven hundred forty-nine".