245795987 has 2 divisors, whose sum is σ = 245795988. Its totient is φ = 245795986.

The previous prime is 245795983. The next prime is 245796049. The reversal of 245795987 is 789597542.

245795987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245795987 - 2² = 245795983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245795983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122897993 + 122897994.

It is an arithmetic number, because the mean of its divisors is an integer number (122897994).

Almost surely, 2^245795987 is an apocalyptic number.

245795987 is a deficient number, since it is larger than the sum of its proper divisors (1).

245795987 is an equidigital number, since it uses as much as digits as its factorization.

245795987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 56.

The square root of 245795987 is about 15677.8820954873. The cubic root of 245795987 is about 626.4093949537.

The spelling of 245795987 in words is "two hundred forty-five million, seven hundred ninety-five thousand, nine hundred eighty-seven".