56436563 has 4 divisors (see below), whose sum is σ = 56645088. Its totient is φ = 56228040.

The previous prime is 56436559. The next prime is 56436619. The reversal of 56436563 is 36563465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36563465 = 5 ⋅7312693.

It is a cyclic number.

It is not a de Polignac number, because 56436563 - 2² = 56436559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56436533) 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, 103856 + ... + 104397.

It is an arithmetic number, because the mean of its divisors is an integer number (14161272).

Almost surely, 2^56436563 is an apocalyptic number.

56436563 is a deficient number, since it is larger than the sum of its proper divisors (208525).

56436563 is a wasteful number, since it uses less digits than its factorization.

56436563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208524.

The product of its digits is 194400, while the sum is 38.

The square root of 56436563 is about 7512.4272375844. The cubic root of 56436563 is about 383.5778487036.

It can be divided in two parts, 56 and 436563, that multiplied together give a triangular number (24447528 = T₆₉₉₂).

The spelling of 56436563 in words is "fifty-six million, four hundred thirty-six thousand, five hundred sixty-three".