53619444 has 72 divisors (see below), whose sum is σ = 143692640. Its totient is φ = 16811712.

The previous prime is 53619439. The next prime is 53619451. The reversal of 53619444 is 44491635.

53619444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 53619399 and 53619408.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 189327 + ... + 189609.

Almost surely, 2^53619444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53619444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71846320).

53619444 is an abundant number, since it is smaller than the sum of its proper divisors (90073196).

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

53619444 is a wasteful number, since it uses less digits than its factorization.

53619444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 584 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 53619444 is about 7322.5298906867. The cubic root of 53619444 is about 377.0863126070.

The spelling of 53619444 in words is "fifty-three million, six hundred nineteen thousand, four hundred forty-four".