245599213 has 2 divisors, whose sum is σ = 245599214. Its totient is φ = 245599212.

The previous prime is 245599181. The next prime is 245599217. The reversal of 245599213 is 312995542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147549609 + 98049604 = 12147^2 + 9902^2 .

It is a cyclic number.

It is not a de Polignac number, because 245599213 - 2⁵ = 245599181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245599217) 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 as a sum of consecutive naturals, namely, 122799606 + 122799607.

It is an arithmetic number, because the mean of its divisors is an integer number (122799607).

Almost surely, 2^245599213 is an apocalyptic number.

It is an amenable number.

245599213 is a deficient number, since it is larger than the sum of its proper divisors (1).

245599213 is an equidigital number, since it uses as much as digits as its factorization.

245599213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 40.

The square root of 245599213 is about 15671.6053102418. The cubic root of 245599213 is about 626.2421912618.

The spelling of 245599213 in words is "two hundred forty-five million, five hundred ninety-nine thousand, two hundred thirteen".