56005642 has 32 divisors (see below), whose sum is σ = 107579520. Its totient is φ = 21228480.

The previous prime is 56005637. The next prime is 56005643. The reversal of 56005642 is 24650065.

It is a self number, because there is not a number n which added to its sum of digits gives 56005642.

It is not an unprimeable number, because it can be changed into a prime (56005643) 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 15 ways as a sum of consecutive naturals, for example, 784 + ... + 10612.

It is an arithmetic number, because the mean of its divisors is an integer number (3361860).

Almost surely, 2^56005642 is an apocalyptic number.

56005642 is a deficient number, since it is larger than the sum of its proper divisors (51573878).

56005642 is a wasteful number, since it uses less digits than its factorization.

56005642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9886.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 56005642 is about 7483.6917360351. The cubic root of 56005642 is about 382.5990846441.

The spelling of 56005642 in words is "fifty-six million, five thousand, six hundred forty-two".