56278073 has 4 divisors (see below), whose sum is σ = 57799140. Its totient is φ = 54757008.

The previous prime is 56278069. The next prime is 56278087. The reversal of 56278073 is 37087265.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37087265 = 5 ⋅7417453.

It can be written as a sum of positive squares in 2 ways, for example, as 35557369 + 20720704 = 5963^2 + 4552^2 .

It is a cyclic number.

It is not a de Polignac number, because 56278073 - 2² = 56278069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56278003) 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, 760478 + ... + 760551.

It is an arithmetic number, because the mean of its divisors is an integer number (14449785).

Almost surely, 2^56278073 is an apocalyptic number.

It is an amenable number.

56278073 is a deficient number, since it is larger than the sum of its proper divisors (1521067).

56278073 is a wasteful number, since it uses less digits than its factorization.

56278073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521066.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 56278073 is about 7501.8712998824. The cubic root of 56278073 is about 383.2184466468.

The spelling of 56278073 in words is "fifty-six million, two hundred seventy-eight thousand, seventy-three".