53181117 has 40 divisors (see below), whose sum is σ = 91789632. Its totient is φ = 30326400.

The previous prime is 53181113. The next prime is 53181131. The reversal of 53181117 is 71118135.

It is not a de Polignac number, because 53181117 - 2² = 53181113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53181113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13392 + ... + 16902.

Almost surely, 2^53181117 is an apocalyptic number.

It is an amenable number.

53181117 is a deficient number, since it is larger than the sum of its proper divisors (38608515).

53181117 is a wasteful number, since it uses less digits than its factorization.

53181117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551 (or 3542 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 53181117 is about 7292.5384469333. The cubic root of 53181117 is about 376.0559676949.

The spelling of 53181117 in words is "fifty-three million, one hundred eighty-one thousand, one hundred seventeen".