56855039 has 4 divisors (see below), whose sum is σ = 56916024. Its totient is φ = 56794056.

The previous prime is 56854999. The next prime is 56855047. The reversal of 56855039 is 93055865.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56855039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56854987 and 56855005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56857039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29072 + ... + 30965.

It is an arithmetic number, because the mean of its divisors is an integer number (14229006).

Almost surely, 2^56855039 is an apocalyptic number.

56855039 is a deficient number, since it is larger than the sum of its proper divisors (60985).

56855039 is an equidigital number, since it uses as much as digits as its factorization.

56855039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60984.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 56855039 is about 7540.2280469492. The cubic root of 56855039 is about 384.5235890500.

The spelling of 56855039 in words is "fifty-six million, eight hundred fifty-five thousand, thirty-nine".