55571543348887 has 2 divisors, whose sum is σ = 55571543348888. Its totient is φ = 55571543348886.

The previous prime is 55571543348819. The next prime is 55571543348903. The reversal of 55571543348887 is 78884334517555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55571543348887 - 2¹⁵ = 55571543316119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55571543348807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27785771674443 + 27785771674444.

It is an arithmetic number, because the mean of its divisors is an integer number (27785771674444).

Almost surely, 2^{55571543348887} is an apocalyptic number.

55571543348887 is a deficient number, since it is larger than the sum of its proper divisors (1).

55571543348887 is an equidigital number, since it uses as much as digits as its factorization.

55571543348887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920000, while the sum is 73.

The spelling of 55571543348887 in words is "fifty-five trillion, five hundred seventy-one billion, five hundred forty-three million, three hundred forty-eight thousand, eight hundred eighty-seven".