53365644 has 36 divisors (see below), whose sum is σ = 135187416. Its totient is φ = 17750208.

The previous prime is 53365643. The next prime is 53365649. The reversal of 53365644 is 44656335.

53365644 is a `hidden beast` number, since 5 + 3 + 3 + 6 + 5 + 644 = 666.

53365644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 53365599 and 53365608.

It is not an unprimeable number, because it can be changed into a prime (53365643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 18952 + ... + 21584.

It is an arithmetic number, because the mean of its divisors is an integer number (3755206).

Almost surely, 2^53365644 is an apocalyptic number.

It is an amenable number.

53365644 is an abundant number, since it is smaller than the sum of its proper divisors (81821772).

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

53365644 is a wasteful number, since it uses less digits than its factorization.

53365644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206 (or 3201 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 53365644 is about 7305.1792585809. The cubic root of 53365644 is about 376.4904099609.

The spelling of 53365644 in words is "fifty-three million, three hundred sixty-five thousand, six hundred forty-four".