53318517 has 24 divisors (see below), whose sum is σ = 84941856. Its totient is φ = 29641248.

The previous prime is 53318509. The next prime is 53318519. The reversal of 53318517 is 71581335.

It is not a de Polignac number, because 53318517 - 2³ = 53318509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53318519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (3539244).

Almost surely, 2^53318517 is an apocalyptic number.

It is an amenable number.

53318517 is a deficient number, since it is larger than the sum of its proper divisors (31623339).

53318517 is a wasteful number, since it uses less digits than its factorization.

53318517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857 (or 9850 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 53318517 is about 7301.9529579421. The cubic root of 53318517 is about 376.3795515654.

It can be divided in two parts, 53318 and 517, that added together give a palindrome (53835).

The spelling of 53318517 in words is "fifty-three million, three hundred eighteen thousand, five hundred seventeen".