53187318 has 12 divisors (see below), whose sum is σ = 115239228. Its totient is φ = 17729100.

The previous prime is 53187301. The next prime is 53187319. The reversal of 53187318 is 81378135.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53187319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1477408 + ... + 1477443.

It is an arithmetic number, because the mean of its divisors is an integer number (9603269).

Almost surely, 2^53187318 is an apocalyptic number.

53187318 is an abundant number, since it is smaller than the sum of its proper divisors (62051910).

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

53187318 is a wasteful number, since it uses less digits than its factorization.

53187318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954859 (or 2954856 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 53187318 is about 7292.9635951374. The cubic root of 53187318 is about 376.0705833615.

The spelling of 53187318 in words is "fifty-three million, one hundred eighty-seven thousand, three hundred eighteen".