252459309 has 8 divisors (see below), whose sum is σ = 338010112. Its totient is φ = 167607360.

The previous prime is 252459287. The next prime is 252459323. The reversal of 252459309 is 903954252.

252459309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 252459309 - 2⁹ = 252458797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252459349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173869 + ... + 175314.

It is an arithmetic number, because the mean of its divisors is an integer number (42251264).

Almost surely, 2^252459309 is an apocalyptic number.

It is an amenable number.

252459309 is a deficient number, since it is larger than the sum of its proper divisors (85550803).

252459309 is a wasteful number, since it uses less digits than its factorization.

252459309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349427.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 252459309 is about 15888.9681540369. The cubic root of 252459309 is about 632.0194782826.

The spelling of 252459309 in words is "two hundred fifty-two million, four hundred fifty-nine thousand, three hundred nine".