56645543 has 2 divisors, whose sum is σ = 56645544. Its totient is φ = 56645542.

The previous prime is 56645539. The next prime is 56645599. The reversal of 56645543 is 34554665.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56645543 - 2² = 56645539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56645497 and 56645506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56615543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28322771 + 28322772.

It is an arithmetic number, because the mean of its divisors is an integer number (28322772).

Almost surely, 2^56645543 is an apocalyptic number.

56645543 is a deficient number, since it is larger than the sum of its proper divisors (1).

56645543 is an equidigital number, since it uses as much as digits as its factorization.

56645543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 38.

The square root of 56645543 is about 7526.3233387890. The cubic root of 56645543 is about 384.0507180369.

The spelling of 56645543 in words is "fifty-six million, six hundred forty-five thousand, five hundred forty-three".