56042005 has 4 divisors (see below), whose sum is σ = 67250412. Its totient is φ = 44833600.

The previous prime is 56042003. The next prime is 56042057. The reversal of 56042005 is 50024065.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7349521 + 48692484 = 2711^2 + 6978^2 .

It is not a de Polignac number, because 56042005 - 2¹ = 56042003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56042003) 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, 5604196 + ... + 5604205.

It is an arithmetic number, because the mean of its divisors is an integer number (16812603).

Almost surely, 2^56042005 is an apocalyptic number.

It is an amenable number.

56042005 is a deficient number, since it is larger than the sum of its proper divisors (11208407).

56042005 is a wasteful number, since it uses less digits than its factorization.

56042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11208406.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 56042005 is about 7486.1208245660. The cubic root of 56042005 is about 382.6818705927.

The spelling of 56042005 in words is "fifty-six million, forty-two thousand, five".