55571543348903 has 2 divisors, whose sum is σ = 55571543348904. Its totient is φ = 55571543348902.

The previous prime is 55571543348887. The next prime is 55571543348953. The reversal of 55571543348903 is 30984334517555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55571543348903 - 2⁴ = 55571543348887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55571543348953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27785771674451 + 27785771674452.

It is an arithmetic number, because the mean of its divisors is an integer number (27785771674452).

Almost surely, 2^{55571543348903} is an apocalyptic number.

55571543348903 is a deficient number, since it is larger than the sum of its proper divisors (1).

55571543348903 is an equidigital number, since it uses as much as digits as its factorization.

55571543348903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080000, while the sum is 62.

The spelling of 55571543348903 in words is "fifty-five trillion, five hundred seventy-one billion, five hundred forty-three million, three hundred forty-eight thousand, nine hundred three".