55421013003563 has 2 divisors, whose sum is σ = 55421013003564. Its totient is φ = 55421013003562.

The previous prime is 55421013003511. The next prime is 55421013003607. The reversal of 55421013003563 is 36530031012455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55421013003563 - 2¹² = 55421012999467 is a prime.

It is not a weakly prime, because it can be changed into another prime (55421013006563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27710506501781 + 27710506501782.

It is an arithmetic number, because the mean of its divisors is an integer number (27710506501782).

Almost surely, 2^{55421013003563} is an apocalyptic number.

55421013003563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55421013003563 is an equidigital number, since it uses as much as digits as its factorization.

55421013003563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 55421013003563 in words is "fifty-five trillion, four hundred twenty-one billion, thirteen million, three thousand, five hundred sixty-three".