53217717 has 16 divisors (see below), whose sum is σ = 81200640. Its totient is φ = 30370032.

The previous prime is 53217641. The next prime is 53217719. The reversal of 53217717 is 71771235.

It is not a de Polignac number, because 53217717 - 2⁷ = 53217589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53217719) 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, 23334 + ... + 25512.

It is an arithmetic number, because the mean of its divisors is an integer number (5075040).

Almost surely, 2^53217717 is an apocalyptic number.

It is an amenable number.

53217717 is a deficient number, since it is larger than the sum of its proper divisors (27982923).

53217717 is a wasteful number, since it uses less digits than its factorization.

53217717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352.

The product of its digits is 10290, while the sum is 33.

The square root of 53217717 is about 7295.0474295922. The cubic root of 53217717 is about 376.1422169312.

The spelling of 53217717 in words is "fifty-three million, two hundred seventeen thousand, seven hundred seventeen".