542611543 has 2 divisors, whose sum is σ = 542611544. Its totient is φ = 542611542.

The previous prime is 542611513. The next prime is 542611567. The reversal of 542611543 is 345116245.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542611543 - 2¹³ = 542603351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542611513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271305771 + 271305772.

It is an arithmetic number, because the mean of its divisors is an integer number (271305772).

Almost surely, 2^542611543 is an apocalyptic number.

542611543 is a deficient number, since it is larger than the sum of its proper divisors (1).

542611543 is an equidigital number, since it uses as much as digits as its factorization.

542611543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 542611543 is about 23294.0237614715. The cubic root of 542611543 is about 815.6359185534.

Adding to 542611543 its reverse (345116245), we get a palindrome (887727788).

The spelling of 542611543 in words is "five hundred forty-two million, six hundred eleven thousand, five hundred forty-three".