56984287 has 4 divisors (see below), whose sum is σ = 59983480. Its totient is φ = 53985096.

The previous prime is 56984281. The next prime is 56984327. The reversal of 56984287 is 78248965.

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-56984287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56984287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56984281) 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, 1499568 + ... + 1499605.

It is an arithmetic number, because the mean of its divisors is an integer number (14995870).

Almost surely, 2^56984287 is an apocalyptic number.

56984287 is a deficient number, since it is larger than the sum of its proper divisors (2999193).

56984287 is a wasteful number, since it uses less digits than its factorization.

56984287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999192.

The product of its digits is 967680, while the sum is 49.

The square root of 56984287 is about 7548.7937446986. The cubic root of 56984287 is about 384.8147464284.

The spelling of 56984287 in words is "fifty-six million, nine hundred eighty-four thousand, two hundred eighty-seven".