56540018 has 8 divisors (see below), whose sum is σ = 84843948. Its totient is φ = 28258704.

The previous prime is 56539999. The next prime is 56540047. The reversal of 56540018 is 81004565.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48205249 + 8334769 = 6943^2 + 2887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3680 + ... + 11252.

Almost surely, 2^56540018 is an apocalyptic number.

56540018 is a deficient number, since it is larger than the sum of its proper divisors (28303930).

56540018 is a wasteful number, since it uses less digits than its factorization.

56540018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11308.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 56540018 is about 7519.3096757615. The cubic root of 56540018 is about 383.8120870588.

The spelling of 56540018 in words is "fifty-six million, five hundred forty thousand, eighteen".