55421353543 has 2 divisors, whose sum is σ = 55421353544. Its totient is φ = 55421353542.

The previous prime is 55421353513. The next prime is 55421353549. The reversal of 55421353543 is 34535312455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55421353543 - 2⁵ = 55421353511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55421353496 and 55421353505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55421353549) 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, 27710676771 + 27710676772.

It is an arithmetic number, because the mean of its divisors is an integer number (27710676772).

Almost surely, 2^55421353543 is an apocalyptic number.

55421353543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55421353543 is an equidigital number, since it uses as much as digits as its factorization.

55421353543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 40.

Adding to 55421353543 its reverse (34535312455), we get a palindrome (89956665998).

The spelling of 55421353543 in words is "fifty-five billion, four hundred twenty-one million, three hundred fifty-three thousand, five hundred forty-three".