2154611 has 2 divisors, whose sum is σ = 2154612. Its totient is φ = 2154610.

The previous prime is 2154587. The next prime is 2154629. The reversal of 2154611 is 1164512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154611 is a prime.

It is a super-2 number, since 2×2154611² = 9284697122642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2154641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077305 + 1077306.

It is an arithmetic number, because the mean of its divisors is an integer number (1077306).

2^2154611 is an apocalyptic number.

2154611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154611 is an equidigital number, since it uses as much as digits as its factorization.

2154611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 20.

The square root of 2154611 is about 1467.8593256849. The cubic root of 2154611 is about 129.1584895737.

Subtracting from 2154611 its reverse (1164512), we obtain a palindrome (990099).

The spelling of 2154611 in words is "two million, one hundred fifty-four thousand, six hundred eleven".