2111567 has 2 divisors, whose sum is σ = 2111568. Its totient is φ = 2111566.

The previous prime is 2111539. The next prime is 2111579. The reversal of 2111567 is 7651112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111567 - 2⁸ = 2111311 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 (2111507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055783 + 1055784.

It is an arithmetic number, because the mean of its divisors is an integer number (1055784).

2^2111567 is an apocalyptic number.

2111567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111567 is an equidigital number, since it uses as much as digits as its factorization.

2111567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 23.

The square root of 2111567 is about 1453.1231881709. The cubic root of 2111567 is about 128.2926045301.

Adding to 2111567 its reverse (7651112), we get a palindrome (9762679).

The spelling of 2111567 in words is "two million, one hundred eleven thousand, five hundred sixty-seven".