53698518 has 16 divisors (see below), whose sum is σ = 119330160. Its totient is φ = 17899488.

The previous prime is 53698499. The next prime is 53698531. The reversal of 53698518 is 81589635.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 497155 + ... + 497262.

It is an arithmetic number, because the mean of its divisors is an integer number (7458135).

Almost surely, 2^53698518 is an apocalyptic number.

53698518 is an abundant number, since it is smaller than the sum of its proper divisors (65631642).

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

53698518 is a wasteful number, since it uses less digits than its factorization.

53698518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994428 (or 994422 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 53698518 is about 7327.9272649229. The cubic root of 53698518 is about 377.2715879176.

The spelling of 53698518 in words is "fifty-three million, six hundred ninety-eight thousand, five hundred eighteen".