543345457 has 4 divisors (see below), whose sum is σ = 544674340. Its totient is φ = 542016576.

The previous prime is 543345433. The next prime is 543345461. The reversal of 543345457 is 754543345.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 525739041 + 17606416 = 22929^2 + 4196^2 .

It is a cyclic number.

It is not a de Polignac number, because 543345457 - 2⁷ = 543345329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543345487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663828 + ... + 664645.

It is an arithmetic number, because the mean of its divisors is an integer number (136168585).

Almost surely, 2^543345457 is an apocalyptic number.

It is an amenable number.

543345457 is a deficient number, since it is larger than the sum of its proper divisors (1328883).

543345457 is a wasteful number, since it uses less digits than its factorization.

543345457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328882.

The product of its digits is 504000, while the sum is 40.

The square root of 543345457 is about 23309.7717063038. The cubic root of 543345457 is about 816.0034847226.

The spelling of 543345457 in words is "five hundred forty-three million, three hundred forty-five thousand, four hundred fifty-seven".