52643969 has 4 divisors (see below), whose sum is σ = 60164544. Its totient is φ = 45123396.

The previous prime is 52643963. The next prime is 52643971. The reversal of 52643969 is 96934625.

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 not a de Polignac number, because 52643969 - 2⁴ = 52643953 is a prime.

It is a super-2 number, since 2×52643969² = 5542774944145922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52643963) 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, 3760277 + ... + 3760290.

It is an arithmetic number, because the mean of its divisors is an integer number (15041136).

Almost surely, 2^52643969 is an apocalyptic number.

It is an amenable number.

52643969 is a deficient number, since it is larger than the sum of its proper divisors (7520575).

52643969 is an equidigital number, since it uses as much as digits as its factorization.

52643969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520574.

The product of its digits is 349920, while the sum is 44.

The square root of 52643969 is about 7255.6163762977. The cubic root of 52643969 is about 374.7855817191.

The spelling of 52643969 in words is "fifty-two million, six hundred forty-three thousand, nine hundred sixty-nine".