56643423 has 4 divisors (see below), whose sum is σ = 75524568. Its totient is φ = 37762280.

The previous prime is 56643403. The next prime is 56643437. The reversal of 56643423 is 32434665.

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 56643423 - 2⁶ = 56643359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56643403) 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, 9440568 + ... + 9440573.

It is an arithmetic number, because the mean of its divisors is an integer number (18881142).

Almost surely, 2^56643423 is an apocalyptic number.

56643423 is a deficient number, since it is larger than the sum of its proper divisors (18881145).

56643423 is a wasteful number, since it uses less digits than its factorization.

56643423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18881144.

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

The square root of 56643423 is about 7526.1824984517. The cubic root of 56643423 is about 384.0459268528.

The spelling of 56643423 in words is "fifty-six million, six hundred forty-three thousand, four hundred twenty-three".