522620491 has 2 divisors, whose sum is σ = 522620492. Its totient is φ = 522620490.

The previous prime is 522620437. The next prime is 522620507. The reversal of 522620491 is 194026225.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 522620491 - 2⁷ = 522620363 is a prime.

It is a super-2 number, since 2×522620491² = 546264355226162162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (522620411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261310245 + 261310246.

It is an arithmetic number, because the mean of its divisors is an integer number (261310246).

Almost surely, 2^522620491 is an apocalyptic number.

522620491 is a deficient number, since it is larger than the sum of its proper divisors (1).

522620491 is an equidigital number, since it uses as much as digits as its factorization.

522620491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 522620491 is about 22860.8943613324. The cubic root of 522620491 is about 805.4936935374.

The spelling of 522620491 in words is "five hundred twenty-two million, six hundred twenty thousand, four hundred ninety-one".