55644560 has 40 divisors (see below), whose sum is σ = 129809400. Its totient is φ = 22182912.

The previous prime is 55644551. The next prime is 55644583. The reversal of 55644560 is 6544655.

It can be written as a sum of positive squares in 4 ways, for example, as 15904144 + 39740416 = 3988^2 + 6304^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 55644560.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26924 + ... + 28916.

It is an arithmetic number, because the mean of its divisors is an integer number (3245235).

Almost surely, 2^55644560 is an apocalyptic number.

It is an amenable number.

55644560 is an abundant number, since it is smaller than the sum of its proper divisors (74164840).

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

55644560 is a wasteful number, since it uses less digits than its factorization.

55644560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355 (or 2349 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 55644560 is about 7459.5281352107. The cubic root of 55644560 is about 381.7750747734.

The spelling of 55644560 in words is "fifty-five million, six hundred forty-four thousand, five hundred sixty".