5731526521 has 6 divisors (see below), whose sum is σ = 6667286010. Its totient is φ = 4912736976.

The previous prime is 5731526513. The next prime is 5731526527. The reversal of 5731526521 is 1256251375.

It can be written as a sum of positive squares in only one way, i.e., 2960556921 + 2770969600 = 54411^2 + 52640^2 .

It is not a de Polignac number, because 5731526521 - 2³ = 5731526513 is a prime.

It is a super-4 number, since 4×5731526521⁴ (a number of 40 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (5731526527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58484916 + ... + 58485013.

It is an arithmetic number, because the mean of its divisors is an integer number (1111214335).

Almost surely, 2^5731526521 is an apocalyptic number.

It is an amenable number.

5731526521 is a deficient number, since it is larger than the sum of its proper divisors (935759489).

5731526521 is a wasteful number, since it uses less digits than its factorization.

5731526521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116969943 (or 116969936 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 5731526521 is about 75706.8459321877. The cubic root of 5731526521 is about 1789.6032870307.

Adding to 5731526521 its reverse (1256251375), we get a palindrome (6987777896).

The spelling of 5731526521 in words is "five billion, seven hundred thirty-one million, five hundred twenty-six thousand, five hundred twenty-one".