543542161 has 8 divisors (see below), whose sum is σ = 553919040. Its totient is φ = 533204208.

The previous prime is 543542137. The next prime is 543542171. The reversal of 543542161 is 161245345.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 543542161 - 2²⁵ = 509987729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543542171) 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 7 ways as a sum of consecutive naturals, for example, 19275 + ... + 38191.

It is an arithmetic number, because the mean of its divisors is an integer number (69239880).

Almost surely, 2^543542161 is an apocalyptic number.

It is an amenable number.

543542161 is a deficient number, since it is larger than the sum of its proper divisors (10376879).

543542161 is a wasteful number, since it uses less digits than its factorization.

543542161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19463.

The product of its digits is 14400, while the sum is 31.

The square root of 543542161 is about 23313.9906708397. The cubic root of 543542161 is about 816.1019437426.

The spelling of 543542161 in words is "five hundred forty-three million, five hundred forty-two thousand, one hundred sixty-one".