252929647 has 4 divisors (see below), whose sum is σ = 252961456. Its totient is φ = 252897840.

The previous prime is 252929641. The next prime is 252929659. The reversal of 252929647 is 746929252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 252929647 - 2¹⁹ = 252405359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252929597 and 252929606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252929641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7822 + ... + 23812.

It is an arithmetic number, because the mean of its divisors is an integer number (63240364).

Almost surely, 2^252929647 is an apocalyptic number.

252929647 is a deficient number, since it is larger than the sum of its proper divisors (31809).

252929647 is a wasteful number, since it uses less digits than its factorization.

252929647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31808.

The product of its digits is 544320, while the sum is 46.

The square root of 252929647 is about 15903.7620392158. The cubic root of 252929647 is about 632.4117241548.

The spelling of 252929647 in words is "two hundred fifty-two million, nine hundred twenty-nine thousand, six hundred forty-seven".