535688521 has 2 divisors, whose sum is σ = 535688522. Its totient is φ = 535688520.

The previous prime is 535688501. The next prime is 535688533. The reversal of 535688521 is 125886535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504451600 + 31236921 = 22460^2 + 5589^2 .

It is a cyclic number.

It is not a de Polignac number, because 535688521 - 2⁷ = 535688393 is a prime.

It is not a weakly prime, because it can be changed into another prime (535688501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267844260 + 267844261.

It is an arithmetic number, because the mean of its divisors is an integer number (267844261).

Almost surely, 2^535688521 is an apocalyptic number.

It is an amenable number.

535688521 is a deficient number, since it is larger than the sum of its proper divisors (1).

535688521 is an equidigital number, since it uses as much as digits as its factorization.

535688521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288000, while the sum is 43.

The square root of 535688521 is about 23144.9459061800. The cubic root of 535688521 is about 812.1522404779.

The spelling of 535688521 in words is "five hundred thirty-five million, six hundred eighty-eight thousand, five hundred twenty-one".