53436444 has 48 divisors (see below), whose sum is σ = 132021120. Its totient is φ = 16793280.

The previous prime is 53436443. The next prime is 53436451. The reversal of 53436444 is 44463435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53436443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13179 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (2750440).

Almost surely, 2^53436444 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 53436444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66010560).

53436444 is an abundant number, since it is smaller than the sum of its proper divisors (78584676).

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

53436444 is a wasteful number, since it uses less digits than its factorization.

53436444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650 (or 3648 counting only the distinct ones).

The product of its digits is 69120, while the sum is 33.

The square root of 53436444 is about 7310.0235293739. The cubic root of 53436444 is about 376.6568325240.

Adding to 53436444 its reverse (44463435), we get a palindrome (97899879).

The spelling of 53436444 in words is "fifty-three million, four hundred thirty-six thousand, four hundred forty-four".