55500578587 has 2 divisors, whose sum is σ = 55500578588. Its totient is φ = 55500578586.

The previous prime is 55500578563. The next prime is 55500578599. The reversal of 55500578587 is 78587500555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55500578587 is a prime.

It is not a weakly prime, because it can be changed into another prime (55500572587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750289293 + 27750289294.

It is an arithmetic number, because the mean of its divisors is an integer number (27750289294).

Almost surely, 2^55500578587 is an apocalyptic number.

55500578587 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500578587 is an equidigital number, since it uses as much as digits as its factorization.

55500578587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800000, while the sum is 55.

The spelling of 55500578587 in words is "fifty-five billion, five hundred million, five hundred seventy-eight thousand, five hundred eighty-seven".