245233509 has 8 divisors (see below), whose sum is σ = 327050400. Its totient is φ = 163452816.

The previous prime is 245233501. The next prime is 245233511. The reversal of 245233509 is 905332542.

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

It is not a de Polignac number, because 245233509 - 2³ = 245233501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245233509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245233501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21399 + ... + 30795.

It is an arithmetic number, because the mean of its divisors is an integer number (40881300).

Almost surely, 2^245233509 is an apocalyptic number.

It is an amenable number.

245233509 is a deficient number, since it is larger than the sum of its proper divisors (81816891).

245233509 is an equidigital number, since it uses as much as digits as its factorization.

245233509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18099.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 245233509 is about 15659.9332374056. The cubic root of 245233509 is about 625.9312062256.

The spelling of 245233509 in words is "two hundred forty-five million, two hundred thirty-three thousand, five hundred nine".