542555543 has 2 divisors, whose sum is σ = 542555544. Its totient is φ = 542555542.

The previous prime is 542555539. The next prime is 542555549. The reversal of 542555543 is 345555245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542555543 - 2² = 542555539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542555497 and 542555506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542555549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271277771 + 271277772.

It is an arithmetic number, because the mean of its divisors is an integer number (271277772).

Almost surely, 2^542555543 is an apocalyptic number.

542555543 is a deficient number, since it is larger than the sum of its proper divisors (1).

542555543 is an equidigital number, since it uses as much as digits as its factorization.

542555543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300000, while the sum is 38.

The square root of 542555543 is about 23292.8217054096. The cubic root of 542555543 is about 815.6078584655.

The spelling of 542555543 in words is "five hundred forty-two million, five hundred fifty-five thousand, five hundred forty-three".