56538543 has 4 divisors (see below), whose sum is σ = 75384728. Its totient is φ = 37692360.

The previous prime is 56538539. The next prime is 56538563. The reversal of 56538543 is 34583565.

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

It is not a de Polignac number, because 56538543 - 2² = 56538539 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 (56538523) 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, 9423088 + ... + 9423093.

It is an arithmetic number, because the mean of its divisors is an integer number (18846182).

Almost surely, 2^56538543 is an apocalyptic number.

56538543 is a deficient number, since it is larger than the sum of its proper divisors (18846185).

56538543 is a wasteful number, since it uses less digits than its factorization.

56538543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18846184.

The product of its digits is 216000, while the sum is 39.

The square root of 56538543 is about 7519.2115943096. The cubic root of 56538543 is about 383.8087494361.

It can be divided in two parts, 5653 and 8543, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 56538543 in words is "fifty-six million, five hundred thirty-eight thousand, five hundred forty-three".