245552391571 has 2 divisors, whose sum is σ = 245552391572. Its totient is φ = 245552391570.

The previous prime is 245552391541. The next prime is 245552391607. The reversal of 245552391571 is 175193255542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245552391571 is a prime.

It is not a weakly prime, because it can be changed into another prime (245552391521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122776195785 + 122776195786.

It is an arithmetic number, because the mean of its divisors is an integer number (122776195786).

Almost surely, 2^245552391571 is an apocalyptic number.

245552391571 is a deficient number, since it is larger than the sum of its proper divisors (1).

245552391571 is an equidigital number, since it uses as much as digits as its factorization.

245552391571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890000, while the sum is 49.

The spelling of 245552391571 in words is "two hundred forty-five billion, five hundred fifty-two million, three hundred ninety-one thousand, five hundred seventy-one".