543388961 has 24 divisors (see below), whose sum is σ = 608086080. Its totient is φ = 483306912.

The previous prime is 543388957. The next prime is 543389009. The reversal of 543388961 is 169883345.

It is not a de Polignac number, because 543388961 - 2² = 543388957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543388361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1961555 + ... + 1961831.

It is an arithmetic number, because the mean of its divisors is an integer number (25336920).

Almost surely, 2^543388961 is an apocalyptic number.

It is an amenable number.

543388961 is a deficient number, since it is larger than the sum of its proper divisors (64697119).

543388961 is a wasteful number, since it uses less digits than its factorization.

543388961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 386 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 543388961 is about 23310.7048584980. The cubic root of 543388961 is about 816.0252624380.

The spelling of 543388961 in words is "five hundred forty-three million, three hundred eighty-eight thousand, nine hundred sixty-one".