5506042121 has 2 divisors, whose sum is σ = 5506042122. Its totient is φ = 5506042120.

The previous prime is 5506042117. The next prime is 5506042133. The reversal of 5506042121 is 1212406055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5382276496 + 123765625 = 73364^2 + 11125^2 .

It is a cyclic number.

It is not a de Polignac number, because 5506042121 - 2² = 5506042117 is a prime.

It is not a weakly prime, because it can be changed into another prime (5506042141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753021060 + 2753021061.

It is an arithmetic number, because the mean of its divisors is an integer number (2753021061).

Almost surely, 2^5506042121 is an apocalyptic number.

It is an amenable number.

5506042121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5506042121 is an equidigital number, since it uses as much as digits as its factorization.

5506042121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 5506042121 is about 74202.7096607664. The cubic root of 5506042121 is about 1765.8203187380.

Adding to 5506042121 its reverse (1212406055), we get a palindrome (6718448176).

The spelling of 5506042121 in words is "five billion, five hundred six million, forty-two thousand, one hundred twenty-one".