53109504 has 216 divisors, whose sum is σ = 181752480. Its totient is φ = 14598144.

The previous prime is 53109481. The next prime is 53109517. The reversal of 53109504 is 40590135.

53109504 is a `hidden beast` number, since 53 + 109 + 504 = 666.

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, 596692 + ... + 596780.

Almost surely, 2^53109504 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 53109504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90876240).

53109504 is an abundant number, since it is smaller than the sum of its proper divisors (128642976).

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

53109504 is a wasteful number, since it uses less digits than its factorization.

53109504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 53109504 is about 7287.6267741975. The cubic root of 53109504 is about 375.8870945141.

Adding to 53109504 its reverse (40590135), we get a palindrome (93699639).

The spelling of 53109504 in words is "fifty-three million, one hundred nine thousand, five hundred four".