52091729 has 4 divisors (see below), whose sum is σ = 52200960. Its totient is φ = 51982500.

The previous prime is 52091719. The next prime is 52091783. The reversal of 52091729 is 92719025.

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 52091729 - 2¹⁶ = 52026193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52091719) 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, 53897 + ... + 54854.

It is an arithmetic number, because the mean of its divisors is an integer number (13050240).

Almost surely, 2^52091729 is an apocalyptic number.

It is an amenable number.

52091729 is a deficient number, since it is larger than the sum of its proper divisors (109231).

52091729 is a wasteful number, since it uses less digits than its factorization.

52091729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109230.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 52091729 is about 7217.4600102806. The cubic root of 52091729 is about 373.4704608046.

The spelling of 52091729 in words is "fifty-two million, ninety-one thousand, seven hundred twenty-nine".