53521308 has 36 divisors (see below), whose sum is σ = 137847528. Its totient is φ = 17503200.

The previous prime is 53521301. The next prime is 53521313. The reversal of 53521308 is 80312535.

53521308 is a `hidden beast` number, since 5 + 352 + 1 + 308 = 666.

53521308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12118 + ... + 15933.

It is an arithmetic number, because the mean of its divisors is an integer number (3829098).

Almost surely, 2^53521308 is an apocalyptic number.

It is an amenable number.

53521308 is an abundant number, since it is smaller than the sum of its proper divisors (84326220).

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

53521308 is a wasteful number, since it uses less digits than its factorization.

53521308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28114 (or 28109 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 53521308 is about 7315.8258590538. The cubic root of 53521308 is about 376.8561203549.

The spelling of 53521308 in words is "fifty-three million, five hundred twenty-one thousand, three hundred eight".