523390481 has 2 divisors, whose sum is σ = 523390482. Its totient is φ = 523390480.

The previous prime is 523390433. The next prime is 523390489. The reversal of 523390481 is 184093325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376010881 + 147379600 = 19391^2 + 12140^2 .

It is a cyclic number.

It is not a de Polignac number, because 523390481 - 2²² = 519196177 is a prime.

It is a super-2 number, since 2×523390481² = 547875191202822722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (523390489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261695240 + 261695241.

It is an arithmetic number, because the mean of its divisors is an integer number (261695241).

Almost surely, 2^523390481 is an apocalyptic number.

It is an amenable number.

523390481 is a deficient number, since it is larger than the sum of its proper divisors (1).

523390481 is an equidigital number, since it uses as much as digits as its factorization.

523390481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 523390481 is about 22877.7289301189. The cubic root of 523390481 is about 805.8890841714.

The spelling of 523390481 in words is "five hundred twenty-three million, three hundred ninety thousand, four hundred eighty-one".