56181814 has 16 divisors (see below), whose sum is σ = 90901440. Its totient is φ = 25888320.

The previous prime is 56181757. The next prime is 56181817. The reversal of 56181814 is 41818165.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 56181814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56181817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19699 + ... + 22369.

It is an arithmetic number, because the mean of its divisors is an integer number (5681340).

Almost surely, 2^56181814 is an apocalyptic number.

56181814 is a deficient number, since it is larger than the sum of its proper divisors (34719626).

56181814 is a wasteful number, since it uses less digits than its factorization.

56181814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495.

The product of its digits is 7680, while the sum is 34.

The square root of 56181814 is about 7495.4528882516. The cubic root of 56181814 is about 382.9998341161. Note that the first 3 decimals are identical.

Adding to 56181814 its reverse (41818165), we get a palindrome (97999979).

The spelling of 56181814 in words is "fifty-six million, one hundred eighty-one thousand, eight hundred fourteen".