55724718 has 32 divisors (see below), whose sum is σ = 131765760. Its totient is φ = 15372000.

The previous prime is 55724693. The next prime is 55724723. The reversal of 55724718 is 81742755.

55724718 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 15 ways as a sum of consecutive naturals, for example, 21658 + ... + 24093.

It is an arithmetic number, because the mean of its divisors is an integer number (4117680).

Almost surely, 2^55724718 is an apocalyptic number.

55724718 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

55724718 is an abundant number, since it is smaller than the sum of its proper divisors (76041042).

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

55724718 is a wasteful number, since it uses less digits than its factorization.

55724718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45792.

The product of its digits is 78400, while the sum is 39.

The square root of 55724718 is about 7464.8990616083. The cubic root of 55724718 is about 381.9583070822.

The spelling of 55724718 in words is "fifty-five million, seven hundred twenty-four thousand, seven hundred eighteen".