541555543 has 2 divisors, whose sum is σ = 541555544. Its totient is φ = 541555542.

The previous prime is 541555457. The next prime is 541555571. The reversal of 541555543 is 345555145.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 541555543 - 2²¹ = 539458391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541550543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270777771 + 270777772.

It is an arithmetic number, because the mean of its divisors is an integer number (270777772).

Almost surely, 2^541555543 is an apocalyptic number.

541555543 is a deficient number, since it is larger than the sum of its proper divisors (1).

541555543 is an equidigital number, since it uses as much as digits as its factorization.

541555543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150000, while the sum is 37.

The square root of 541555543 is about 23271.3459645118. The cubic root of 541555543 is about 815.1064600538.

The spelling of 541555543 in words is "five hundred forty-one million, five hundred fifty-five thousand, five hundred forty-three".