53609504 has 72 divisors (see below), whose sum is σ = 119532672. Its totient is φ = 23612160.

The previous prime is 53609503. The next prime is 53609537. The reversal of 53609504 is 40590635.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (53609503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124169 + ... + 124599.

It is an arithmetic number, because the mean of its divisors is an integer number (1660176).

Almost surely, 2^53609504 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 53609504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59766336).

53609504 is an abundant number, since it is smaller than the sum of its proper divisors (65923168).

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

53609504 is a wasteful number, since it uses less digits than its factorization.

53609504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 53609504 is about 7321.8511320567. The cubic root of 53609504 is about 377.0630096824.

The spelling of 53609504 in words is "fifty-three million, six hundred nine thousand, five hundred four".