55719860 has 36 divisors (see below), whose sum is σ = 136118052. Its totient is φ = 19103616.

The previous prime is 55719847. The next prime is 55719871. The reversal of 55719860 is 6891755.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 34245904 = 4634^2 + 5852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27449 + ... + 29408.

It is an arithmetic number, because the mean of its divisors is an integer number (3781057).

Almost surely, 2^55719860 is an apocalyptic number.

It is an amenable number.

55719860 is an abundant number, since it is smaller than the sum of its proper divisors (80398192).

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

55719860 is a wasteful number, since it uses less digits than its factorization.

55719860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56880 (or 56871 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 55719860 is about 7464.5736649858. The cubic root of 55719860 is about 381.9472072361.

The spelling of 55719860 in words is "fifty-five million, seven hundred nineteen thousand, eight hundred sixty".