245190887 has 2 divisors, whose sum is σ = 245190888. Its totient is φ = 245190886.

The previous prime is 245190809. The next prime is 245190893. The reversal of 245190887 is 788091542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245190887 - 2¹⁰ = 245189863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245193887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122595443 + 122595444.

It is an arithmetic number, because the mean of its divisors is an integer number (122595444).

Almost surely, 2^245190887 is an apocalyptic number.

245190887 is a deficient number, since it is larger than the sum of its proper divisors (1).

245190887 is an equidigital number, since it uses as much as digits as its factorization.

245190887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 245190887 is about 15658.5723167855. The cubic root of 245190887 is about 625.8949414893.

The spelling of 245190887 in words is "two hundred forty-five million, one hundred ninety thousand, eight hundred eighty-seven".