522620369 has 2 divisors, whose sum is σ = 522620370. Its totient is φ = 522620368.

The previous prime is 522620363. The next prime is 522620381. The reversal of 522620369 is 963026225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361000000 + 161620369 = 19000^2 + 12713^2 .

It is a cyclic number.

It is not a de Polignac number, because 522620369 - 2¹⁶ = 522554833 is a prime.

It is a super-2 number, since 2×522620369² = 546264100187392322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (522620363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261310184 + 261310185.

It is an arithmetic number, because the mean of its divisors is an integer number (261310185).

Almost surely, 2^522620369 is an apocalyptic number.

It is an amenable number.

522620369 is a deficient number, since it is larger than the sum of its proper divisors (1).

522620369 is an equidigital number, since it uses as much as digits as its factorization.

522620369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 522620369 is about 22860.8916930202. The cubic root of 522620369 is about 805.4936308595.

The spelling of 522620369 in words is "five hundred twenty-two million, six hundred twenty thousand, three hundred sixty-nine".