543810961 has 4 divisors (see below), whose sum is σ = 546206832. Its totient is φ = 541415092.

The previous prime is 543810931. The next prime is 543810979. The reversal of 543810961 is 169018345.

543810961 = T₁₉₀₃₉ + T₁₉₀₄₀ + T₁₉₀₄₁.

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.

It is a cyclic number.

It is not a de Polignac number, because 543810961 - 2⁷ = 543810833 is a prime.

It is a super-2 number, since 2×543810961² = 591460722607487042, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 543810961.

It is not an unprimeable number, because it can be changed into a prime (543810931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197595 + ... + 1198048.

It is an arithmetic number, because the mean of its divisors is an integer number (136551708).

Almost surely, 2^543810961 is an apocalyptic number.

543810961 is the 19041-st centered triangular number.

It is an amenable number.

543810961 is a deficient number, since it is larger than the sum of its proper divisors (2395871).

543810961 is a wasteful number, since it uses less digits than its factorization.

543810961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395870.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 543810961 is about 23319.7547371322. The cubic root of 543810961 is about 816.2364515855.

The spelling of 543810961 in words is "five hundred forty-three million, eight hundred ten thousand, nine hundred sixty-one".