252820429 has 4 divisors (see below), whose sum is σ = 253628476. Its totient is φ = 252012384.

The previous prime is 252820387. The next prime is 252820453. The reversal of 252820429 is 924028252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 487204 + 252333225 = 698^2 + 15885^2 .

It is a cyclic number.

It is not a de Polignac number, because 252820429 - 2²³ = 244431821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252820394 and 252820403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252820489) 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, 403554 + ... + 404179.

It is an arithmetic number, because the mean of its divisors is an integer number (63407119).

Almost surely, 2^252820429 is an apocalyptic number.

It is an amenable number.

252820429 is a deficient number, since it is larger than the sum of its proper divisors (808047).

252820429 is an equidigital number, since it uses as much as digits as its factorization.

252820429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808046.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 252820429 is about 15900.3279525927. The cubic root of 252820429 is about 632.3206834395.

The spelling of 252820429 in words is "two hundred fifty-two million, eight hundred twenty thousand, four hundred twenty-nine".