252197729 has 8 divisors (see below), whose sum is σ = 292951488. Its totient is φ = 212625360.

The previous prime is 252197719. The next prime is 252197753. The reversal of 252197729 is 927791252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252197729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 252197729.

It is not an unprimeable number, because it can be changed into a prime (252197719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294887 + ... + 295740.

It is an arithmetic number, because the mean of its divisors is an integer number (36618936).

Almost surely, 2^252197729 is an apocalyptic number.

It is an amenable number.

252197729 is a deficient number, since it is larger than the sum of its proper divisors (40753759).

252197729 is an equidigital number, since it uses as much as digits as its factorization.

252197729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590695.

The product of its digits is 158760, while the sum is 44.

The square root of 252197729 is about 15880.7345233147. The cubic root of 252197729 is about 631.8011186224.

The spelling of 252197729 in words is "two hundred fifty-two million, one hundred ninety-seven thousand, seven hundred twenty-nine".