245263253 has 4 divisors (see below), whose sum is σ = 245704140. Its totient is φ = 244822368.

The previous prime is 245263243. The next prime is 245263261. The reversal of 245263253 is 352362542.

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 34374769 + 210888484 = 5863^2 + 14522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245263253 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 (245263243) 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, 219608 + ... + 220721.

It is an arithmetic number, because the mean of its divisors is an integer number (61426035).

Almost surely, 2^245263253 is an apocalyptic number.

It is an amenable number.

245263253 is a deficient number, since it is larger than the sum of its proper divisors (440887).

245263253 is an equidigital number, since it uses as much as digits as its factorization.

245263253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440886.

The product of its digits is 43200, while the sum is 32.

The square root of 245263253 is about 15660.8828933748. The cubic root of 245263253 is about 625.9565112844.

The spelling of 245263253 in words is "two hundred forty-five million, two hundred sixty-three thousand, two hundred fifty-three".