245020747 has 2 divisors, whose sum is σ = 245020748. Its totient is φ = 245020746.

The previous prime is 245020733. The next prime is 245020757. The reversal of 245020747 is 747020542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245020747 - 2¹⁹ = 244496459 is a prime.

It is not a weakly prime, because it can be changed into another prime (245020717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122510373 + 122510374.

It is an arithmetic number, because the mean of its divisors is an integer number (122510374).

Almost surely, 2^245020747 is an apocalyptic number.

245020747 is a deficient number, since it is larger than the sum of its proper divisors (1).

245020747 is an equidigital number, since it uses as much as digits as its factorization.

245020747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 245020747 is about 15653.1385670734. The cubic root of 245020747 is about 625.7501367516.

The spelling of 245020747 in words is "two hundred forty-five million, twenty thousand, seven hundred forty-seven".