56682218 has 4 divisors (see below), whose sum is σ = 85023330. Its totient is φ = 28341108.

The previous prime is 56682203. The next prime is 56682247. The reversal of 56682218 is 81228665.

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

It can be written as a sum of positive squares in only one way, i.e., 55606849 + 1075369 = 7457^2 + 1037^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14170553 + ... + 14170556.

Almost surely, 2^56682218 is an apocalyptic number.

56682218 is a deficient number, since it is larger than the sum of its proper divisors (28341112).

56682218 is a wasteful number, since it uses less digits than its factorization.

56682218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28341111.

The product of its digits is 46080, while the sum is 38.

The square root of 56682218 is about 7528.7593931537. The cubic root of 56682218 is about 384.1335843470.

The spelling of 56682218 in words is "fifty-six million, six hundred eighty-two thousand, two hundred eighteen".