53445444 has 24 divisors (see below), whose sum is σ = 134299200. Its totient is φ = 16444704.

The previous prime is 53445437. The next prime is 53445449. The reversal of 53445444 is 44454435.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53445449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171144 + ... + 171455.

It is an arithmetic number, because the mean of its divisors is an integer number (5595800).

Almost surely, 2^53445444 is an apocalyptic number.

It is an amenable number.

53445444 is an abundant number, since it is smaller than the sum of its proper divisors (80853756).

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

53445444 is a wasteful number, since it uses less digits than its factorization.

53445444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342619 (or 342617 counting only the distinct ones).

The product of its digits is 76800, while the sum is 33.

The square root of 53445444 is about 7310.6390965496. The cubic root of 53445444 is about 376.6779774016.

Adding to 53445444 its reverse (44454435), we get a palindrome (97899879).

The spelling of 53445444 in words is "fifty-three million, four hundred forty-five thousand, four hundred forty-four".