53405044 has 48 divisors (see below), whose sum is σ = 117565056. Its totient is φ = 20792640.

The previous prime is 53405039. The next prime is 53405069. The reversal of 53405044 is 44050435.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36552 + ... + 37984.

It is an arithmetic number, because the mean of its divisors is an integer number (2449272).

Almost surely, 2^53405044 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 53405044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58782528).

53405044 is an abundant number, since it is smaller than the sum of its proper divisors (64160012).

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

53405044 is a wasteful number, since it uses less digits than its factorization.

53405044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 53405044 is about 7307.8754778663. The cubic root of 53405044 is about 376.5830417988.

Adding to 53405044 its reverse (44050435), we get a palindrome (97455479).

The spelling of 53405044 in words is "fifty-three million, four hundred five thousand, forty-four".