533540561 has 2 divisors, whose sum is σ = 533540562. Its totient is φ = 533540560.

The previous prime is 533540551. The next prime is 533540593. The reversal of 533540561 is 165045335.

It is an a-pointer prime, because the next prime (533540593) can be obtained adding 533540561 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520980625 + 12559936 = 22825^2 + 3544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-533540561 is a prime.

It is not a weakly prime, because it can be changed into another prime (533540551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266770280 + 266770281.

It is an arithmetic number, because the mean of its divisors is an integer number (266770281).

Almost surely, 2^533540561 is an apocalyptic number.

It is an amenable number.

533540561 is a deficient number, since it is larger than the sum of its proper divisors (1).

533540561 is an equidigital number, since it uses as much as digits as its factorization.

533540561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 533540561 is about 23098.4969424419. The cubic root of 533540561 is about 811.0652858531.

Adding to 533540561 its reverse (165045335), we get a palindrome (698585896).

The spelling of 533540561 in words is "five hundred thirty-three million, five hundred forty thousand, five hundred sixty-one".