543661330 has 16 divisors (see below), whose sum is σ = 979525080. Its totient is φ = 217256832.

The previous prime is 543661303. The next prime is 543661351. The reversal of 543661330 is 33166345.

It can be written as a sum of positive squares in 4 ways, for example, as 284225881 + 259435449 = 16859^2 + 16107^2 .

It is a junction number, because it is equal to n+sod(n) for n = 543661292 and 543661301.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14739 + ... + 36118.

Almost surely, 2^543661330 is an apocalyptic number.

543661330 is a deficient number, since it is larger than the sum of its proper divisors (435863750).

543661330 is a wasteful number, since it uses less digits than its factorization.

543661330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51933.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 543661330 is about 23316.5462708352. The cubic root of 543661330 is about 816.1615815241.

It can be divided in two parts, 54366 and 1330, that added together give a square (55696 = 236²).

The spelling of 543661330 in words is "five hundred forty-three million, six hundred sixty-one thousand, three hundred thirty".