56000045 has 4 divisors (see below), whose sum is σ = 67200060. Its totient is φ = 44800032.

The previous prime is 56000041. The next prime is 56000047. The reversal of 56000045 is 54000065.

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 10666756 + 45333289 = 3266^2 + 6733^2 .

It is a cyclic number.

It is not a de Polignac number, because 56000045 - 2² = 56000041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55999990 and 56000026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56000041) 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, 5600000 + ... + 5600009.

It is an arithmetic number, because the mean of its divisors is an integer number (16800015).

Almost surely, 2^56000045 is an apocalyptic number.

It is an amenable number.

56000045 is a deficient number, since it is larger than the sum of its proper divisors (11200015).

56000045 is a wasteful number, since it uses less digits than its factorization.

56000045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200014.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 56000045 is about 7483.3177802363. The cubic root of 56000045 is about 382.5863390329.

Adding to 56000045 its sum of digits (20), we get a palindrome (56000065).

The spelling of 56000045 in words is "fifty-six million, forty-five", and thus it is an aban number and an uban number.