245545087 has 2 divisors, whose sum is σ = 245545088. Its totient is φ = 245545086.

The previous prime is 245545067. The next prime is 245545103. The reversal of 245545087 is 780545542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245545087 - 2¹⁹ = 245020799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245545067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122772543 + 122772544.

It is an arithmetic number, because the mean of its divisors is an integer number (122772544).

Almost surely, 2^245545087 is an apocalyptic number.

245545087 is a deficient number, since it is larger than the sum of its proper divisors (1).

245545087 is an equidigital number, since it uses as much as digits as its factorization.

245545087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 245545087 is about 15669.8783339246. The cubic root of 245545087 is about 626.1961834119.

The spelling of 245545087 in words is "two hundred forty-five million, five hundred forty-five thousand, eighty-seven".