53685504 has 108 divisors (see below), whose sum is σ = 160707456. Its totient is φ = 17874432.

The previous prime is 53685491. The next prime is 53685529. The reversal of 53685504 is 40558635.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61777 + ... + 62639.

It is an arithmetic number, because the mean of its divisors is an integer number (1488032).

Almost surely, 2^53685504 is an apocalyptic number.

53685504 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53685504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80353728).

53685504 is an abundant number, since it is smaller than the sum of its proper divisors (107021952).

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

53685504 is an frugal number, since it uses more digits than its factorization.

53685504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 53685504 is about 7327.0392383281. The cubic root of 53685504 is about 377.2411078142.

The spelling of 53685504 in words is "fifty-three million, six hundred eighty-five thousand, five hundred four".