53487444 has 12 divisors (see below), whose sum is σ = 124804064. Its totient is φ = 17829144.

The previous prime is 53487439. The next prime is 53487509. The reversal of 53487444 is 44478435.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2228632 + ... + 2228655.

Almost surely, 2^53487444 is an apocalyptic number.

It is an amenable number.

53487444 is an abundant number, since it is smaller than the sum of its proper divisors (71316620).

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

53487444 is a wasteful number, since it uses less digits than its factorization.

53487444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457294 (or 4457292 counting only the distinct ones).

The product of its digits is 215040, while the sum is 39.

The square root of 53487444 is about 7313.5110583085. The cubic root of 53487444 is about 376.7766221223.

Subtracting from 53487444 its reverse (44478435), we obtain a palindrome (9009009).

It can be divided in two parts, 534 and 87444, that added together give a palindrome (87978).

The spelling of 53487444 in words is "fifty-three million, four hundred eighty-seven thousand, four hundred forty-four".