245493653 has 2 divisors, whose sum is σ = 245493654. Its totient is φ = 245493652.

The previous prime is 245493641. The next prime is 245493659. The reversal of 245493653 is 356394542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 34023889 = 14542^2 + 5833^2 .

It is a cyclic number.

It is not a de Polignac number, because 245493653 - 2¹⁴ = 245477269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245493653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245493659) 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, 122746826 + 122746827.

It is an arithmetic number, because the mean of its divisors is an integer number (122746827).

Almost surely, 2^245493653 is an apocalyptic number.

It is an amenable number.

245493653 is a deficient number, since it is larger than the sum of its proper divisors (1).

245493653 is an equidigital number, since it uses as much as digits as its factorization.

245493653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 41.

The square root of 245493653 is about 15668.2370737744. The cubic root of 245493653 is about 626.1524575338.

The spelling of 245493653 in words is "two hundred forty-five million, four hundred ninety-three thousand, six hundred fifty-three".