522740423 has 2 divisors, whose sum is σ = 522740424. Its totient is φ = 522740422.

The previous prime is 522740419. The next prime is 522740441. The reversal of 522740423 is 324047225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 522740423 - 2² = 522740419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522740623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261370211 + 261370212.

It is an arithmetic number, because the mean of its divisors is an integer number (261370212).

Almost surely, 2^522740423 is an apocalyptic number.

522740423 is a deficient number, since it is larger than the sum of its proper divisors (1).

522740423 is an equidigital number, since it uses as much as digits as its factorization.

522740423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 522740423 is about 22863.5172928401. The cubic root of 522740423 is about 805.5553042617. Note that the first 3 decimals are identical.

Adding to 522740423 its reverse (324047225), we get a palindrome (846787648).

The spelling of 522740423 in words is "five hundred twenty-two million, seven hundred forty thousand, four hundred twenty-three".