55505055055487 has 2 divisors, whose sum is σ = 55505055055488. Its totient is φ = 55505055055486.

The previous prime is 55505055055433. The next prime is 55505055055501. The reversal of 55505055055487 is 78455055050555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55505055055487 - 2³⁸ = 55230177148543 is a prime.

It is a super-2 number, since 2×55505055055487² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55505055058487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752527527743 + 27752527527744.

It is an arithmetic number, because the mean of its divisors is an integer number (27752527527744).

Almost surely, 2^{55505055055487} is an apocalyptic number.

55505055055487 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505055055487 is an equidigital number, since it uses as much as digits as its factorization.

55505055055487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87500000, while the sum is 59.

The spelling of 55505055055487 in words is "fifty-five trillion, five hundred five billion, fifty-five million, fifty-five thousand, four hundred eighty-seven".