6535523 has 4 divisors (see below), whose sum is σ = 6694968. Its totient is φ = 6376080.

The previous prime is 6535517. The next prime is 6535541. The reversal of 6535523 is 3255356.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6535523 - 2²⁰ = 5486947 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 5⁶ + 3⁴ + 5⁷ + 5⁸ + 2²² + 3¹¹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6535553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79661 + ... + 79742.

It is an arithmetic number, because the mean of its divisors is an integer number (1673742).

Almost surely, 2^6535523 is an apocalyptic number.

6535523 is a deficient number, since it is larger than the sum of its proper divisors (159445).

6535523 is a wasteful number, since it uses less digits than its factorization.

6535523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159444.

The product of its digits is 13500, while the sum is 29.

The square root of 6535523 is about 2556.4668978886. The cubic root of 6535523 is about 186.9649147289.

It can be divided in two parts, 6535 and 523, that multiplied together give a triangular number (3417805 = T₂₆₁₄).

The spelling of 6535523 in words is "six million, five hundred thirty-five thousand, five hundred twenty-three".