5506578691 has 2 divisors, whose sum is σ = 5506578692. Its totient is φ = 5506578690.

The previous prime is 5506578631. The next prime is 5506578733. The reversal of 5506578691 is 1968756055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5506578691 - 2⁷ = 5506578563 is a prime.

It is not a weakly prime, because it can be changed into another prime (5506578601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2753289345 + 2753289346.

It is an arithmetic number, because the mean of its divisors is an integer number (2753289346).

Almost surely, 2^5506578691 is an apocalyptic number.

5506578691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5506578691 is an equidigital number, since it uses as much as digits as its factorization.

5506578691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The square root of 5506578691 is about 74206.3251414595. The cubic root of 5506578691 is about 1765.8776772671.

The spelling of 5506578691 in words is "five billion, five hundred six million, five hundred seventy-eight thousand, six hundred ninety-one".