5331642521 has 4 divisors (see below), whose sum is σ = 5335912500. Its totient is φ = 5327372544.

The previous prime is 5331642517. The next prime is 5331642529. The reversal of 5331642521 is 1252461335.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3464970496 + 1866672025 = 58864^2 + 43205^2 .

It is a cyclic number.

It is not a de Polignac number, because 5331642521 - 2² = 5331642517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5331642529) 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 3 ways as a sum of consecutive naturals, for example, 2133116 + ... + 2135613.

It is an arithmetic number, because the mean of its divisors is an integer number (1333978125).

Almost surely, 2^5331642521 is an apocalyptic number.

It is an amenable number.

5331642521 is a deficient number, since it is larger than the sum of its proper divisors (4269979).

5331642521 is a wasteful number, since it uses less digits than its factorization.

5331642521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269978.

The product of its digits is 21600, while the sum is 32.

The square root of 5331642521 is about 73018.0972156903. The cubic root of 5331642521 is about 1746.9762773800.

The spelling of 5331642521 in words is "five billion, three hundred thirty-one million, six hundred forty-two thousand, five hundred twenty-one".