535740521 has 2 divisors, whose sum is σ = 535740522. Its totient is φ = 535740520.

The previous prime is 535740497. The next prime is 535740539. The reversal of 535740521 is 125047535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454542400 + 81198121 = 21320^2 + 9011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-535740521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (535740551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267870260 + 267870261.

It is an arithmetic number, because the mean of its divisors is an integer number (267870261).

Almost surely, 2^535740521 is an apocalyptic number.

It is an amenable number.

535740521 is a deficient number, since it is larger than the sum of its proper divisors (1).

535740521 is an equidigital number, since it uses as much as digits as its factorization.

535740521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 535740521 is about 23146.0692343214. The cubic root of 535740521 is about 812.1785185284.

The spelling of 535740521 in words is "five hundred thirty-five million, seven hundred forty thousand, five hundred twenty-one".