52809369 has 4 divisors (see below), whose sum is σ = 70412496. Its totient is φ = 35206244.

The previous prime is 52809343. The next prime is 52809373. The reversal of 52809369 is 96390825.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52809369 is a prime.

It is a super-2 number, since 2×52809369² = 5577658908356322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52809369.

It is not an unprimeable number, because it can be changed into a prime (52809329) 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, 8801559 + ... + 8801564.

It is an arithmetic number, because the mean of its divisors is an integer number (17603124).

Almost surely, 2^52809369 is an apocalyptic number.

It is an amenable number.

52809369 is a deficient number, since it is larger than the sum of its proper divisors (17603127).

52809369 is a wasteful number, since it uses less digits than its factorization.

52809369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17603126.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 52809369 is about 7267.0055043326. The cubic root of 52809369 is about 375.1776793557.

The spelling of 52809369 in words is "fifty-two million, eight hundred nine thousand, three hundred sixty-nine".