5540111321 has 2 divisors, whose sum is σ = 5540111322. Its totient is φ = 5540111320.

The previous prime is 5540111303. The next prime is 5540111363. The reversal of 5540111321 is 1231110455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4911907225 + 628204096 = 70085^2 + 25064^2 .

It is a cyclic number.

It is not a de Polignac number, because 5540111321 - 2²² = 5535917017 is a prime.

It is not a weakly prime, because it can be changed into another prime (5540111021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770055660 + 2770055661.

It is an arithmetic number, because the mean of its divisors is an integer number (2770055661).

Almost surely, 2^5540111321 is an apocalyptic number.

It is an amenable number.

5540111321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540111321 is an equidigital number, since it uses as much as digits as its factorization.

5540111321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 5540111321 is about 74431.9240715971. The cubic root of 5540111321 is about 1769.4548973118.

Adding to 5540111321 its reverse (1231110455), we get a palindrome (6771221776).

The spelling of 5540111321 in words is "five billion, five hundred forty million, one hundred eleven thousand, three hundred twenty-one".