1001155567 has 2 divisors, whose sum is σ = 1001155568. Its totient is φ = 1001155566.

The previous prime is 1001155537. The next prime is 1001155577. The reversal of 1001155567 is 7655511001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001155567 - 2¹⁵ = 1001122799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001155537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500577783 + 500577784.

It is an arithmetic number, because the mean of its divisors is an integer number (500577784).

Almost surely, 2^1001155567 is an apocalyptic number.

1001155567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001155567 is an equidigital number, since it uses as much as digits as its factorization.

1001155567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 1001155567 is about 31641.0424449006. The cubic root of 1001155567 is about 1000.3850407246.

Adding to 1001155567 its reverse (7655511001), we get a palindrome (8656666568).

The spelling of 1001155567 in words is "one billion, one million, one hundred fifty-five thousand, five hundred sixty-seven".