245813537 has 2 divisors, whose sum is σ = 245813538. Its totient is φ = 245813536.

The previous prime is 245813527. The next prime is 245813543. The reversal of 245813537 is 735318542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156775441 + 89038096 = 12521^2 + 9436^2 .

It is a cyclic number.

It is not a de Polignac number, because 245813537 - 2¹⁸ = 245551393 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245813537.

It is not a weakly prime, because it can be changed into another prime (245813527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122906768 + 122906769.

It is an arithmetic number, because the mean of its divisors is an integer number (122906769).

Almost surely, 2^245813537 is an apocalyptic number.

It is an amenable number.

245813537 is a deficient number, since it is larger than the sum of its proper divisors (1).

245813537 is an equidigital number, since it uses as much as digits as its factorization.

245813537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 245813537 is about 15678.4417911985. The cubic root of 245813537 is about 626.4243032840.

The spelling of 245813537 in words is "two hundred forty-five million, eight hundred thirteen thousand, five hundred thirty-seven".