52197817 has 8 divisors (see below), whose sum is σ = 59968512. Its totient is φ = 44505600.

The previous prime is 52197809. The next prime is 52197823. The reversal of 52197817 is 71879125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52197817 - 2³ = 52197809 is a prime.

It is a super-2 number, since 2×52197817² = 5449224199130978, which contains 22 as substring.

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 52197817.

It is not an unprimeable number, because it can be changed into a prime (52197857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18184 + ... + 20857.

It is an arithmetic number, because the mean of its divisors is an integer number (7496064).

Almost surely, 2^52197817 is an apocalyptic number.

It is an amenable number.

52197817 is a deficient number, since it is larger than the sum of its proper divisors (7770695).

52197817 is a wasteful number, since it uses less digits than its factorization.

52197817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39239.

The product of its digits is 35280, while the sum is 40.

The square root of 52197817 is about 7224.8056721271. The cubic root of 52197817 is about 373.7238207186.

The spelling of 52197817 in words is "fifty-two million, one hundred ninety-seven thousand, eight hundred seventeen".