55856418 has 16 divisors (see below), whose sum is σ = 111801216. Its totient is φ = 18604080.

The previous prime is 55856401. The next prime is 55856429. The reversal of 55856418 is 81465855.

It is a self number, because there is not a number n which added to its sum of digits gives 55856418.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6855 + ... + 12597.

It is an arithmetic number, because the mean of its divisors is an integer number (6987576).

Almost surely, 2^55856418 is an apocalyptic number.

55856418 is an abundant number, since it is smaller than the sum of its proper divisors (55944798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55856418 is a wasteful number, since it uses less digits than its factorization.

55856418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7369.

The product of its digits is 192000, while the sum is 42.

The square root of 55856418 is about 7473.7151404104. The cubic root of 55856418 is about 382.2589775525.

The spelling of 55856418 in words is "fifty-five million, eight hundred fifty-six thousand, four hundred eighteen".