5540531321 has 6 divisors (see below), whose sum is σ = 5999510430. Its totient is φ = 5114336448.

The previous prime is 5540531281. The next prime is 5540531323. The reversal of 5540531321 is 1231350455.

It can be written as a sum of positive squares in 3 ways, for example, as 3534400 + 5536996921 = 1880^2 + 74411^2 .

It is a de Polignac number, because none of the positive numbers 2^k-5540531321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5540531323) 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, 16391936 + ... + 16392273.

It is an arithmetic number, because the mean of its divisors is an integer number (999918405).

Almost surely, 2^5540531321 is an apocalyptic number.

It is an amenable number.

5540531321 is a deficient number, since it is larger than the sum of its proper divisors (458979109).

5540531321 is a wasteful number, since it uses less digits than its factorization.

5540531321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32784235 (or 32784222 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 5540531321 is about 74434.7453881586. The cubic root of 5540531321 is about 1769.4996107502.

Adding to 5540531321 its reverse (1231350455), we get a palindrome (6771881776).

The spelling of 5540531321 in words is "five billion, five hundred forty million, five hundred thirty-one thousand, three hundred twenty-one".