53165538 has 32 divisors (see below), whose sum is σ = 118917120. Its totient is φ = 17606160.

The previous prime is 53165537. The next prime is 53165557. The reversal of 53165538 is 83556135.

It is not an unprimeable number, because it can be changed into a prime (53165531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5343 + ... + 11613.

It is an arithmetic number, because the mean of its divisors is an integer number (3716160).

Almost surely, 2^53165538 is an apocalyptic number.

53165538 is an abundant number, since it is smaller than the sum of its proper divisors (65751582).

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

53165538 is a wasteful number, since it uses less digits than its factorization.

53165538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6433 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 53165538 is about 7291.4702221157. The cubic root of 53165538 is about 376.0192432056.

The spelling of 53165538 in words is "fifty-three million, one hundred sixty-five thousand, five hundred thirty-eight".