56045543 has 2 divisors, whose sum is σ = 56045544. Its totient is φ = 56045542.

The previous prime is 56045537. The next prime is 56045557. The reversal of 56045543 is 34554065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56045543 - 2¹⁰ = 56044519 is a prime.

It is a super-2 number, since 2×56045543² = 6282205780329698, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_3340859 and since 56045543 and 3340859 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56045513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28022771 + 28022772.

It is an arithmetic number, because the mean of its divisors is an integer number (28022772).

Almost surely, 2^56045543 is an apocalyptic number.

56045543 is a deficient number, since it is larger than the sum of its proper divisors (1).

56045543 is an equidigital number, since it uses as much as digits as its factorization.

56045543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 56045543 is about 7486.3571247971. The cubic root of 56045543 is about 382.6899234807.

The spelling of 56045543 in words is "fifty-six million, forty-five thousand, five hundred forty-three".