245126217241 has 2 divisors, whose sum is σ = 245126217242. Its totient is φ = 245126217240.

The previous prime is 245126217221. The next prime is 245126217331. The reversal of 245126217241 is 142712621542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168399433225 + 76726784016 = 410365^2 + 276996^2 .

It is a cyclic number.

It is not a de Polignac number, because 245126217241 - 2⁹ = 245126216729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245126217241.

It is not a weakly prime, because it can be changed into another prime (245126217221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122563108620 + 122563108621.

It is an arithmetic number, because the mean of its divisors is an integer number (122563108621).

Almost surely, 2^245126217241 is an apocalyptic number.

It is an amenable number.

245126217241 is a deficient number, since it is larger than the sum of its proper divisors (1).

245126217241 is an equidigital number, since it uses as much as digits as its factorization.

245126217241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

Adding to 245126217241 its reverse (142712621542), we get a palindrome (387838838783).

The spelling of 245126217241 in words is "two hundred forty-five billion, one hundred twenty-six million, two hundred seventeen thousand, two hundred forty-one".