55977318 has 40 divisors (see below), whose sum is σ = 126053928. Its totient is φ = 18566496.

The previous prime is 55977301. The next prime is 55977343. The reversal of 55977318 is 81377955.

55977318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37005 + ... + 38487.

Almost surely, 2^55977318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55977318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63026964).

55977318 is an abundant number, since it is smaller than the sum of its proper divisors (70076610).

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

55977318 is a wasteful number, since it uses less digits than its factorization.

55977318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1721 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 55977318 is about 7481.7991151861. The cubic root of 55977318 is about 382.5345758825.

It can be divided in two parts, 559 and 77318, that added together give a palindrome (77877).

The spelling of 55977318 in words is "fifty-five million, nine hundred seventy-seven thousand, three hundred eighteen".