5556110921 has 2 divisors, whose sum is σ = 5556110922. Its totient is φ = 5556110920.

The previous prime is 5556110863. The next prime is 5556110933. The reversal of 5556110921 is 1290116555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5556062521 + 48400 = 74539^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5556110921 is a prime.

It is not a weakly prime, because it can be changed into another prime (5556110951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778055460 + 2778055461.

It is an arithmetic number, because the mean of its divisors is an integer number (2778055461).

Almost surely, 2^5556110921 is an apocalyptic number.

It is an amenable number.

5556110921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556110921 is an equidigital number, since it uses as much as digits as its factorization.

5556110921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 35.

The square root of 5556110921 is about 74539.3246615503. The cubic root of 5556110921 is about 1771.1566297228.

The spelling of 5556110921 in words is "five billion, five hundred fifty-six million, one hundred ten thousand, nine hundred twenty-one".