56278243 has 4 divisors (see below), whose sum is σ = 64318000. Its totient is φ = 48238488.

The previous prime is 56278231. The next prime is 56278253. The reversal of 56278243 is 34287265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34287265 = 5 ⋅6857453.

It is a cyclic number.

It is not a de Polignac number, because 56278243 - 2¹⁷ = 56147171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56278213) 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, 4019868 + ... + 4019881.

It is an arithmetic number, because the mean of its divisors is an integer number (16079500).

Almost surely, 2^56278243 is an apocalyptic number.

56278243 is a deficient number, since it is larger than the sum of its proper divisors (8039757).

56278243 is an equidigital number, since it uses as much as digits as its factorization.

56278243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039756.

The product of its digits is 80640, while the sum is 37.

The square root of 56278243 is about 7501.8826303802. The cubic root of 56278243 is about 383.2188325109.

The spelling of 56278243 in words is "fifty-six million, two hundred seventy-eight thousand, two hundred forty-three".