542356181 has 2 divisors, whose sum is σ = 542356182. Its totient is φ = 542356180.

The previous prime is 542356153. The next prime is 542356187. The reversal of 542356181 is 181653245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375041956 + 167314225 = 19366^2 + 12935^2 .

It is a cyclic number.

It is not a de Polignac number, because 542356181 - 2²⁶ = 475247317 is a prime.

It is a super-2 number, since 2×542356181² = 588300454137809522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542356187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271178090 + 271178091.

It is an arithmetic number, because the mean of its divisors is an integer number (271178091).

Almost surely, 2^542356181 is an apocalyptic number.

It is an amenable number.

542356181 is a deficient number, since it is larger than the sum of its proper divisors (1).

542356181 is an equidigital number, since it uses as much as digits as its factorization.

542356181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 542356181 is about 23288.5418392823. The cubic root of 542356181 is about 815.5079478751.

The spelling of 542356181 in words is "five hundred forty-two million, three hundred fifty-six thousand, one hundred eighty-one".