535721573 has 2 divisors, whose sum is σ = 535721574. Its totient is φ = 535721572.

The previous prime is 535721567. The next prime is 535721639. The reversal of 535721573 is 375127535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329712964 + 206008609 = 18158^2 + 14353^2 .

It is a cyclic number.

It is not a de Polignac number, because 535721573 - 2¹² = 535717477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (535721533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267860786 + 267860787.

It is an arithmetic number, because the mean of its divisors is an integer number (267860787).

Almost surely, 2^535721573 is an apocalyptic number.

It is an amenable number.

535721573 is a deficient number, since it is larger than the sum of its proper divisors (1).

535721573 is an equidigital number, since it uses as much as digits as its factorization.

535721573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110250, while the sum is 38.

The square root of 535721573 is about 23145.6599171421. The cubic root of 535721573 is about 812.1689434080.

The spelling of 535721573 in words is "five hundred thirty-five million, seven hundred twenty-one thousand, five hundred seventy-three".