245813653 has 2 divisors, whose sum is σ = 245813654. Its totient is φ = 245813652.

The previous prime is 245813641. The next prime is 245813677. The reversal of 245813653 is 356318542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174292804 + 71520849 = 13202^2 + 8457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245813653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245813683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122906826 + 122906827.

It is an arithmetic number, because the mean of its divisors is an integer number (122906827).

Almost surely, 2^245813653 is an apocalyptic number.

It is an amenable number.

245813653 is a deficient number, since it is larger than the sum of its proper divisors (1).

245813653 is an equidigital number, since it uses as much as digits as its factorization.

245813653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 245813653 is about 15678.4454905453. The cubic root of 245813653 is about 626.4244018210.

The spelling of 245813653 in words is "two hundred forty-five million, eight hundred thirteen thousand, six hundred fifty-three".