55647144 has 72 divisors (see below), whose sum is σ = 175328010. Its totient is φ = 15898176.

The previous prime is 55647079. The next prime is 55647167. The reversal of 55647144 is 44174655.

55647144 is a `hidden beast` number, since 5 + 5 + 647 + 1 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45724644 + 9922500 = 6762^2 + 3150^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55647099 and 55647108.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4359 + ... + 11414.

Almost surely, 2^55647144 is an apocalyptic number.

It is an amenable number.

55647144 is an abundant number, since it is smaller than the sum of its proper divisors (119680866).

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

55647144 is a wasteful number, since it uses less digits than its factorization.

55647144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15799 (or 15785 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 55647144 is about 7459.7013345039. The cubic root of 55647144 is about 381.7809842550.

The spelling of 55647144 in words is "fifty-five million, six hundred forty-seven thousand, one hundred forty-four".