2158567 has 2 divisors, whose sum is σ = 2158568. Its totient is φ = 2158566.

The previous prime is 2158549. The next prime is 2158577. The reversal of 2158567 is 7658512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2158567 - 2¹⁹ = 1634279 is a prime.

It is a super-2 number, since 2×2158567² = 9318822986978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079283 + 1079284.

It is an arithmetic number, because the mean of its divisors is an integer number (1079284).

2^2158567 is an apocalyptic number.

2158567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158567 is an equidigital number, since it uses as much as digits as its factorization.

2158567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 2158567 is about 1469.2062482851. The cubic root of 2158567 is about 129.2374889214.

Subtracting 2158567 from its reverse (7658512), we obtain a palindrome (5499945).

The spelling of 2158567 in words is "two million, one hundred fifty-eight thousand, five hundred sixty-seven".