56251243 has 4 divisors (see below), whose sum is σ = 56808288. Its totient is φ = 55694200.

The previous prime is 56251231. The next prime is 56251289. The reversal of 56251243 is 34215265.

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

It is a cyclic number.

It is not a de Polignac number, because 56251243 - 2¹³ = 56243051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56251043) 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, 278371 + ... + 278572.

It is an arithmetic number, because the mean of its divisors is an integer number (14202072).

Almost surely, 2^56251243 is an apocalyptic number.

56251243 is a deficient number, since it is larger than the sum of its proper divisors (557045).

56251243 is a wasteful number, since it uses less digits than its factorization.

56251243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557044.

The product of its digits is 7200, while the sum is 28.

The square root of 56251243 is about 7500.0828662089. The cubic root of 56251243 is about 383.1575384652.

The spelling of 56251243 in words is "fifty-six million, two hundred fifty-one thousand, two hundred forty-three".