55505272727 has 2 divisors, whose sum is σ = 55505272728. Its totient is φ = 55505272726.

The previous prime is 55505272681. The next prime is 55505272747. The reversal of 55505272727 is 72727250555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55505272727 - 2¹² = 55505268631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55505272747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752636363 + 27752636364.

It is an arithmetic number, because the mean of its divisors is an integer number (27752636364).

Almost surely, 2^55505272727 is an apocalyptic number.

55505272727 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505272727 is an equidigital number, since it uses as much as digits as its factorization.

55505272727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1715000, while the sum is 47.

The spelling of 55505272727 in words is "fifty-five billion, five hundred five million, two hundred seventy-two thousand, seven hundred twenty-seven".