245053213 has 4 divisors (see below), whose sum is σ = 245151900. Its totient is φ = 244954528.

The previous prime is 245053157. The next prime is 245053217. The reversal of 245053213 is 312350542.

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 218241529 + 26811684 = 14773^2 + 5178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245053213 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 (245053217) 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, 45520 + ... + 50617.

It is an arithmetic number, because the mean of its divisors is an integer number (61287975).

Almost surely, 2^245053213 is an apocalyptic number.

It is an amenable number.

245053213 is a deficient number, since it is larger than the sum of its proper divisors (98687).

245053213 is an equidigital number, since it uses as much as digits as its factorization.

245053213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98686.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 245053213 is about 15654.1755771423. The cubic root of 245053213 is about 625.7777734680. Note that the first 5 decimals are identical.

The spelling of 245053213 in words is "two hundred forty-five million, fifty-three thousand, two hundred thirteen".