5556000091 has 2 divisors, whose sum is σ = 5556000092. Its totient is φ = 5556000090.

The previous prime is 5556000071. The next prime is 5556000127. The reversal of 5556000091 is 1900006555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5556000091 - 2⁷ = 5555999963 is a prime.

It is a super-2 number, since 2×5556000091² = 61738274022384016562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5556000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778000045 + 2778000046.

It is an arithmetic number, because the mean of its divisors is an integer number (2778000046).

Almost surely, 2^5556000091 is an apocalyptic number.

5556000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556000091 is an equidigital number, since it uses as much as digits as its factorization.

5556000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5556000091 is about 74538.5812247590. The cubic root of 5556000091 is about 1771.1448529844.

The spelling of 5556000091 in words is "five billion, five hundred fifty-six million, ninety-one", and thus it is an aban number.