55287909727 has 2 divisors, whose sum is σ = 55287909728. Its totient is φ = 55287909726.

The previous prime is 55287909557. The next prime is 55287909731. The reversal of 55287909727 is 72790978255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55287909727 - 2²³ = 55279521119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55287909767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27643954863 + 27643954864.

It is an arithmetic number, because the mean of its divisors is an integer number (27643954864).

Almost surely, 2^55287909727 is an apocalyptic number.

55287909727 is a deficient number, since it is larger than the sum of its proper divisors (1).

55287909727 is an equidigital number, since it uses as much as digits as its factorization.

55287909727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22226400, while the sum is 61.

It can be divided in two parts, 55 and 287909727, that added together give a palindrome (287909782).

The spelling of 55287909727 in words is "fifty-five billion, two hundred eighty-seven million, nine hundred nine thousand, seven hundred twenty-seven".