56432643 has 4 divisors (see below), whose sum is σ = 75243528. Its totient is φ = 37621760.

The previous prime is 56432627. The next prime is 56432647. The reversal of 56432643 is 34623465.

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

It is a cyclic number.

It is not a de Polignac number, because 56432643 - 2⁴ = 56432627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56432647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9405438 + ... + 9405443.

It is an arithmetic number, because the mean of its divisors is an integer number (18810882).

Almost surely, 2^56432643 is an apocalyptic number.

56432643 is a deficient number, since it is larger than the sum of its proper divisors (18810885).

56432643 is a wasteful number, since it uses less digits than its factorization.

56432643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18810884.

The product of its digits is 51840, while the sum is 33.

The square root of 56432643 is about 7512.1663320243. The cubic root of 56432643 is about 383.5689675818.

It can be divided in two parts, 56432 and 643, that added together give a palindrome (57075).

The spelling of 56432643 in words is "fifty-six million, four hundred thirty-two thousand, six hundred forty-three".