53123717 has 4 divisors (see below), whose sum is σ = 53167500. Its totient is φ = 53079936.

The previous prime is 53123713. The next prime is 53123723. The reversal of 53123717 is 71732135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19088161 + 34035556 = 4369^2 + 5834^2 .

It is a cyclic number.

It is not a de Polignac number, because 53123717 - 2² = 53123713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53123717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53123713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20018 + ... + 22515.

It is an arithmetic number, because the mean of its divisors is an integer number (13291875).

Almost surely, 2^53123717 is an apocalyptic number.

It is an amenable number.

53123717 is a deficient number, since it is larger than the sum of its proper divisors (43783).

53123717 is a wasteful number, since it uses less digits than its factorization.

53123717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43782.

The product of its digits is 4410, while the sum is 29.

The square root of 53123717 is about 7288.6018549513. The cubic root of 53123717 is about 375.9206227678.

The spelling of 53123717 in words is "fifty-three million, one hundred twenty-three thousand, seven hundred seventeen".