53653520 has 20 divisors (see below), whose sum is σ = 124744620. Its totient is φ = 21461376.

The previous prime is 53653507. The next prime is 53653601. The reversal of 53653520 is 2535635.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20106256 + 33547264 = 4484^2 + 5792^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335255 + ... + 335414.

It is an arithmetic number, because the mean of its divisors is an integer number (6237231).

Almost surely, 2^53653520 is an apocalyptic number.

It is an amenable number.

53653520 is an abundant number, since it is smaller than the sum of its proper divisors (71091100).

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

53653520 is a wasteful number, since it uses less digits than its factorization.

53653520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670682 (or 670676 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 53653520 is about 7324.8563125839. The cubic root of 53653520 is about 377.1661771185.

The spelling of 53653520 in words is "fifty-three million, six hundred fifty-three thousand, five hundred twenty".