5231521611 has 24 divisors (see below), whose sum is σ = 7592304720. Its totient is φ = 3471261696.

The previous prime is 5231521597. The next prime is 5231521657. The reversal of 5231521611 is 1161251325.

5231521611 is a `hidden beast` number, since 5 + 23 + 1 + 5 + 21 + 611 = 666.

It is not a de Polignac number, because 5231521611 - 2¹⁰ = 5231520587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5231520611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2331256 + ... + 2333498.

It is an arithmetic number, because the mean of its divisors is an integer number (316346030).

Almost surely, 2^5231521611 is an apocalyptic number.

5231521611 is a deficient number, since it is larger than the sum of its proper divisors (2360783109).

5231521611 is a wasteful number, since it uses less digits than its factorization.

5231521611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355 (or 3352 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 5231521611 is about 72329.2583329872. The cubic root of 5231521611 is about 1735.9718342381.

Adding to 5231521611 its reverse (1161251325), we get a palindrome (6392772936).

The spelling of 5231521611 in words is "five billion, two hundred thirty-one million, five hundred twenty-one thousand, six hundred eleven".