245020613 has 2 divisors, whose sum is σ = 245020614. Its totient is φ = 245020612.

The previous prime is 245020583. The next prime is 245020651. The reversal of 245020613 is 316020542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227195329 + 17825284 = 15073^2 + 4222^2 .

It is a cyclic number.

It is not a de Polignac number, because 245020613 - 2¹⁴ = 245004229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245020673) 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, 122510306 + 122510307.

It is an arithmetic number, because the mean of its divisors is an integer number (122510307).

Almost surely, 2^245020613 is an apocalyptic number.

It is an amenable number.

245020613 is a deficient number, since it is larger than the sum of its proper divisors (1).

245020613 is an equidigital number, since it uses as much as digits as its factorization.

245020613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 245020613 is about 15653.1342867810. The cubic root of 245020613 is about 625.7500226789.

The spelling of 245020613 in words is "two hundred forty-five million, twenty thousand, six hundred thirteen".