56851873 has 4 divisors (see below), whose sum is σ = 61225108. Its totient is φ = 52478640.

The previous prime is 56851867. The next prime is 56851909. The reversal of 56851873 is 37815865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37815865 = 5 ⋅7563173.

It can be written as a sum of positive squares in 2 ways, for example, as 21603904 + 35247969 = 4648^2 + 5937^2 .

It is a cyclic number.

It is not a de Polignac number, because 56851873 - 2⁵ = 56851841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56851813) 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, 2186598 + ... + 2186623.

It is an arithmetic number, because the mean of its divisors is an integer number (15306277).

Almost surely, 2^56851873 is an apocalyptic number.

It is an amenable number.

56851873 is a deficient number, since it is larger than the sum of its proper divisors (4373235).

56851873 is a wasteful number, since it uses less digits than its factorization.

56851873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373234.

The product of its digits is 201600, while the sum is 43.

The square root of 56851873 is about 7540.0181034265. The cubic root of 56851873 is about 384.5164514576.

It can be divided in two parts, 568 and 51873, that added together give a square (52441 = 229²).

The spelling of 56851873 in words is "fifty-six million, eight hundred fifty-one thousand, eight hundred seventy-three".