55646918 has 8 divisors (see below), whose sum is σ = 83903448. Its totient is φ = 27679104.

The previous prime is 55646909. The next prime is 55646939. The reversal of 55646918 is 81964655.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71696 + ... + 72467.

It is an arithmetic number, because the mean of its divisors is an integer number (10487931).

Almost surely, 2^55646918 is an apocalyptic number.

55646918 is a deficient number, since it is larger than the sum of its proper divisors (28256530).

55646918 is a wasteful number, since it uses less digits than its factorization.

55646918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144358.

The product of its digits is 259200, while the sum is 44.

The square root of 55646918 is about 7459.6861864290. The cubic root of 55646918 is about 381.7804674114.

It can be divided in two parts, 556 and 46918, that added together give a palindrome (47474).

The spelling of 55646918 in words is "fifty-five million, six hundred forty-six thousand, nine hundred eighteen".