523221133 has 2 divisors, whose sum is σ = 523221134. Its totient is φ = 523221132.

The previous prime is 523221073. The next prime is 523221137. The reversal of 523221133 is 331122325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494039529 + 29181604 = 22227^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 523221133 - 2¹³ = 523212941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523221137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261610566 + 261610567.

It is an arithmetic number, because the mean of its divisors is an integer number (261610567).

Almost surely, 2^523221133 is an apocalyptic number.

It is an amenable number.

523221133 is a deficient number, since it is larger than the sum of its proper divisors (1).

523221133 is an equidigital number, since it uses as much as digits as its factorization.

523221133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 22.

The square root of 523221133 is about 22874.0274765945. The cubic root of 523221133 is about 805.8021570863.

Adding to 523221133 its reverse (331122325), we get a palindrome (854343458).

The spelling of 523221133 in words is "five hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-three".