523463521 has 6 divisors (see below), whose sum is σ = 608927010. Its totient is φ = 448682976.

The previous prime is 523463519. The next prime is 523463527. The reversal of 523463521 is 125364325.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 341510400 + 181953121 = 18480^2 + 13489^2 .

It is not a de Polignac number, because 523463521 - 2¹ = 523463519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523463527) 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 in 5 ways as a sum of consecutive naturals, for example, 5341416 + ... + 5341513.

It is an arithmetic number, because the mean of its divisors is an integer number (101487835).

Almost surely, 2^523463521 is an apocalyptic number.

It is an amenable number.

523463521 is a deficient number, since it is larger than the sum of its proper divisors (85463489).

523463521 is a wasteful number, since it uses less digits than its factorization.

523463521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682943 (or 10682936 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 523463521 is about 22879.3251867270. The cubic root of 523463521 is about 805.9265701422.

The spelling of 523463521 in words is "five hundred twenty-three million, four hundred sixty-three thousand, five hundred twenty-one".