245494787 has 2 divisors, whose sum is σ = 245494788. Its totient is φ = 245494786.

The previous prime is 245494747. The next prime is 245494793. The reversal of 245494787 is 787494542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245494787 - 2⁶ = 245494723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245494747) 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, 122747393 + 122747394.

It is an arithmetic number, because the mean of its divisors is an integer number (122747394).

Almost surely, 2^245494787 is an apocalyptic number.

245494787 is a deficient number, since it is larger than the sum of its proper divisors (1).

245494787 is an equidigital number, since it uses as much as digits as its factorization.

245494787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 50.

The square root of 245494787 is about 15668.2732615946. The cubic root of 245494787 is about 626.1534216535.

The spelling of 245494787 in words is "two hundred forty-five million, four hundred ninety-four thousand, seven hundred eighty-seven".