53206817 has 4 divisors (see below), whose sum is σ = 53259456. Its totient is φ = 53154180.

The previous prime is 53206789. The next prime is 53206847. The reversal of 53206817 is 71860235.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71860235 = 5 ⋅14372047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53206817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53206847) 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, 24773 + ... + 26834.

It is an arithmetic number, because the mean of its divisors is an integer number (13314864).

Almost surely, 2^53206817 is an apocalyptic number.

It is an amenable number.

53206817 is a deficient number, since it is larger than the sum of its proper divisors (52639).

53206817 is a wasteful number, since it uses less digits than its factorization.

53206817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52638.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 53206817 is about 7294.3003091455. The cubic root of 53206817 is about 376.1165348191.

The spelling of 53206817 in words is "fifty-three million, two hundred six thousand, eight hundred seventeen".