53009244 has 72 divisors (see below), whose sum is σ = 138116160. Its totient is φ = 17136000.

The previous prime is 53009233. The next prime is 53009251. The reversal of 53009244 is 44290035.

53009244 is a `hidden beast` number, since 530 + 0 + 92 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221677 + ... + 221915.

It is an arithmetic number, because the mean of its divisors is an integer number (1918280).

Almost surely, 2^53009244 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 53009244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69058080).

53009244 is an abundant number, since it is smaller than the sum of its proper divisors (85106916).

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

53009244 is a wasteful number, since it uses less digits than its factorization.

53009244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 53009244 is about 7280.7447421263. The cubic root of 53009244 is about 375.6504125837.

Adding to 53009244 its reverse (44290035), we get a palindrome (97299279).

The spelling of 53009244 in words is "fifty-three million, nine thousand, two hundred forty-four".