55684918 has 4 divisors (see below), whose sum is σ = 83527380. Its totient is φ = 27842458.

The previous prime is 55684913. The next prime is 55684919. The reversal of 55684918 is 81948655.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55684913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13921228 + ... + 13921231.

It is an arithmetic number, because the mean of its divisors is an integer number (20881845).

Almost surely, 2^55684918 is an apocalyptic number.

55684918 is a deficient number, since it is larger than the sum of its proper divisors (27842462).

55684918 is a wasteful number, since it uses less digits than its factorization.

55684918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27842461.

The product of its digits is 345600, while the sum is 46.

The square root of 55684918 is about 7462.2327757850. The cubic root of 55684918 is about 381.8673506700.

The spelling of 55684918 in words is "fifty-five million, six hundred eighty-four thousand, nine hundred eighteen".