542810881 has 2 divisors, whose sum is σ = 542810882. Its totient is φ = 542810880.

The previous prime is 542810869. The next prime is 542810909. The reversal of 542810881 is 188018245.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537497856 + 5313025 = 23184^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542810881 is a prime.

It is a super-2 number, since 2×542810881² = 589287305063992322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_28488025 and since 542810881 and 28488025 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542810881.

It is not a weakly prime, because it can be changed into another prime (542813881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271405440 + 271405441.

It is an arithmetic number, because the mean of its divisors is an integer number (271405441).

Almost surely, 2^542810881 is an apocalyptic number.

It is an amenable number.

542810881 is a deficient number, since it is larger than the sum of its proper divisors (1).

542810881 is an equidigital number, since it uses as much as digits as its factorization.

542810881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 542810881 is about 23298.3021055183. The cubic root of 542810881 is about 815.7357857783.

The spelling of 542810881 in words is "five hundred forty-two million, eight hundred ten thousand, eight hundred eighty-one".