543881081 has 4 divisors (see below), whose sum is σ = 561425664. Its totient is φ = 526336500.

The previous prime is 543881077. The next prime is 543881111. The reversal of 543881081 is 180188345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180188345 = 5 ⋅36037669.

It is a cyclic number.

It is not a de Polignac number, because 543881081 - 2² = 543881077 is a prime.

It is a super-2 number, since 2×543881081² = 591613260539457122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (543851081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8772245 + ... + 8772306.

It is an arithmetic number, because the mean of its divisors is an integer number (140356416).

Almost surely, 2^543881081 is an apocalyptic number.

It is an amenable number.

543881081 is a deficient number, since it is larger than the sum of its proper divisors (17544583).

543881081 is a wasteful number, since it uses less digits than its factorization.

543881081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17544582.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 543881081 is about 23321.2581350149. The cubic root of 543881081 is about 816.2715324281.

The spelling of 543881081 in words is "five hundred forty-three million, eight hundred eighty-one thousand, eighty-one".