245896513 has 2 divisors, whose sum is σ = 245896514. Its totient is φ = 245896512.

The previous prime is 245896507. The next prime is 245896523. The reversal of 245896513 is 315698542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236944449 + 8952064 = 15393^2 + 2992^2 .

It is a cyclic number.

It is not a de Polignac number, because 245896513 - 2¹⁷ = 245765441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245896513.

It is not a weakly prime, because it can be changed into another prime (245896523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122948256 + 122948257.

It is an arithmetic number, because the mean of its divisors is an integer number (122948257).

Almost surely, 2^245896513 is an apocalyptic number.

It is an amenable number.

245896513 is a deficient number, since it is larger than the sum of its proper divisors (1).

245896513 is an equidigital number, since it uses as much as digits as its factorization.

245896513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 245896513 is about 15681.0877492603. The cubic root of 245896513 is about 626.4947799227.

The spelling of 245896513 in words is "two hundred forty-five million, eight hundred ninety-six thousand, five hundred thirteen".