245202000521 has 2 divisors, whose sum is σ = 245202000522. Its totient is φ = 245202000520.

The previous prime is 245202000503. The next prime is 245202000529. The reversal of 245202000521 is 125000202542.

245202000521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152259942025 + 92942058496 = 390205^2 + 304864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245202000521 is a prime.

It is not a weakly prime, because it can be changed into another prime (245202000529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122601000260 + 122601000261.

It is an arithmetic number, because the mean of its divisors is an integer number (122601000261).

Almost surely, 2^245202000521 is an apocalyptic number.

It is an amenable number.

245202000521 is a deficient number, since it is larger than the sum of its proper divisors (1).

245202000521 is an equidigital number, since it uses as much as digits as its factorization.

245202000521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The spelling of 245202000521 in words is "two hundred forty-five billion, two hundred two million, five hundred twenty-one", and thus it is an aban number.