53147844 has 18 divisors (see below), whose sum is σ = 134346030. Its totient is φ = 17715936.

The previous prime is 53147833. The next prime is 53147867. The reversal of 53147844 is 44874135.

53147844 is a `hidden beast` number, since 531 + 47 + 84 + 4 = 666.

53147844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32626944 + 20520900 = 5712^2 + 4530^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1476329 = 53147844 / (5 + 3 + 1 + 4 + 7 + 8 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 53147799 and 53147808.

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 5 ways as a sum of consecutive naturals, for example, 738129 + ... + 738200.

Almost surely, 2^53147844 is an apocalyptic number.

It is an amenable number.

53147844 is an abundant number, since it is smaller than the sum of its proper divisors (81198186).

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

53147844 is a wasteful number, since it uses less digits than its factorization.

53147844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476339 (or 1476334 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 53147844 is about 7290.2567856009. The cubic root of 53147844 is about 375.9775243092.

The spelling of 53147844 in words is "fifty-three million, one hundred forty-seven thousand, eight hundred forty-four".