53509308 has 24 divisors (see below), whose sum is σ = 125811840. Its totient is φ = 17699760.

The previous prime is 53509279. The next prime is 53509331. The reversal of 53509308 is 80390535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15448 + ... + 18591.

It is an arithmetic number, because the mean of its divisors is an integer number (5242160).

Almost surely, 2^53509308 is an apocalyptic number.

It is an amenable number.

53509308 is an abundant number, since it is smaller than the sum of its proper divisors (72302532).

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

53509308 is a wasteful number, since it uses less digits than its factorization.

53509308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34177 (or 34175 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 53509308 is about 7315.0056732719. The cubic root of 53509308 is about 376.8279533087.

The spelling of 53509308 in words is "fifty-three million, five hundred nine thousand, three hundred eight".