52515444 has 12 divisors (see below), whose sum is σ = 122536064. Its totient is φ = 17505144.

The previous prime is 52515439. The next prime is 52515473. The reversal of 52515444 is 44451525.

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, 2188132 + ... + 2188155.

Almost surely, 2^52515444 is an apocalyptic number.

It is an amenable number.

52515444 is an abundant number, since it is smaller than the sum of its proper divisors (70020620).

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

52515444 is a wasteful number, since it uses less digits than its factorization.

52515444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376294 (or 4376292 counting only the distinct ones).

The product of its digits is 16000, while the sum is 30.

The square root of 52515444 is about 7246.7540319787. The cubic root of 52515444 is about 374.4803326326.

Adding to 52515444 its reverse (44451525), we get a palindrome (96966969).

The spelling of 52515444 in words is "fifty-two million, five hundred fifteen thousand, four hundred forty-four".