264046543 has 4 divisors (see below), whose sum is σ = 264584808. Its totient is φ = 263508280.

The previous prime is 264046511. The next prime is 264046571. The reversal of 264046543 is 345640462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345640462 = 2 ⋅172820231.

It is a cyclic number.

It is not a de Polignac number, because 264046543 - 2⁵ = 264046511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264046499 and 264046508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264046243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268396 + ... + 269377.

It is an arithmetic number, because the mean of its divisors is an integer number (66146202).

Almost surely, 2^264046543 is an apocalyptic number.

264046543 is a deficient number, since it is larger than the sum of its proper divisors (538265).

264046543 is an equidigital number, since it uses as much as digits as its factorization.

264046543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538264.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 264046543 is about 16249.5090079670. The cubic root of 264046543 is about 641.5445628421.

The spelling of 264046543 in words is "two hundred sixty-four million, forty-six thousand, five hundred forty-three".