55555000079 has 2 divisors, whose sum is σ = 55555000080. Its totient is φ = 55555000078.

The previous prime is 55555000051. The next prime is 55555000117. The reversal of 55555000079 is 97000055555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55555000079 - 2⁸ = 55554999823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55555000979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777500039 + 27777500040.

It is an arithmetic number, because the mean of its divisors is an integer number (27777500040).

Almost surely, 2^55555000079 is an apocalyptic number.

55555000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555000079 is an equidigital number, since it uses as much as digits as its factorization.

55555000079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196875, while the sum is 41.

The spelling of 55555000079 in words is "fifty-five billion, five hundred fifty-five million, seventy-nine", and thus it is an aban number.