245272213 has 2 divisors, whose sum is σ = 245272214. Its totient is φ = 245272212.

The previous prime is 245272201. The next prime is 245272219. The reversal of 245272213 is 312272542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179613604 + 65658609 = 13402^2 + 8103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245272213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245272219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122636106 + 122636107.

It is an arithmetic number, because the mean of its divisors is an integer number (122636107).

Almost surely, 2^245272213 is an apocalyptic number.

It is an amenable number.

245272213 is a deficient number, since it is larger than the sum of its proper divisors (1).

245272213 is an equidigital number, since it uses as much as digits as its factorization.

245272213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 28.

The square root of 245272213 is about 15661.1689538170. The cubic root of 245272213 is about 625.9641337091.

The spelling of 245272213 in words is "two hundred forty-five million, two hundred seventy-two thousand, two hundred thirteen".