5540621101 has 2 divisors, whose sum is σ = 5540621102. Its totient is φ = 5540621100.

The previous prime is 5540621081. The next prime is 5540621111. The reversal of 5540621101 is 1011260455.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4747072201 + 793548900 = 68899^2 + 28170^2 .

It is a cyclic number.

It is not a de Polignac number, because 5540621101 - 2⁷ = 5540620973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5540621111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770310550 + 2770310551.

It is an arithmetic number, because the mean of its divisors is an integer number (2770310551).

Almost surely, 2^5540621101 is an apocalyptic number.

It is an amenable number.

5540621101 is a deficient number, since it is larger than the sum of its proper divisors (1).

5540621101 is an equidigital number, since it uses as much as digits as its factorization.

5540621101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5540621101 is about 74435.3484642881. The cubic root of 5540621101 is about 1769.5091684868.

Adding to 5540621101 its reverse (1011260455), we get a palindrome (6551881556).

The spelling of 5540621101 in words is "five billion, five hundred forty million, six hundred twenty-one thousand, one hundred one".