385555567 has 2 divisors, whose sum is σ = 385555568. Its totient is φ = 385555566.

The previous prime is 385555537. The next prime is 385555579. The reversal of 385555567 is 765555583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385555567 - 2¹⁹ = 385031279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385555567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385555537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192777783 + 192777784.

It is an arithmetic number, because the mean of its divisors is an integer number (192777784).

Almost surely, 2^385555567 is an apocalyptic number.

385555567 is a deficient number, since it is larger than the sum of its proper divisors (1).

385555567 is an equidigital number, since it uses as much as digits as its factorization.

385555567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150000, while the sum is 49.

The square root of 385555567 is about 19635.5689247854. The cubic root of 385555567 is about 727.8283914781.

The spelling of 385555567 in words is "three hundred eighty-five million, five hundred fifty-five thousand, five hundred sixty-seven".