2521111 has 2 divisors, whose sum is σ = 2521112. Its totient is φ = 2521110.

The previous prime is 2521093. The next prime is 2521147. The reversal of 2521111 is 1111252.

2521111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2521111 - 2⁷ = 2520983 is a prime.

2521111 is a modest number, since divided by 1111 gives 252 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2521091 and 2521100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260555 + 1260556.

It is an arithmetic number, because the mean of its divisors is an integer number (1260556).

2^2521111 is an apocalyptic number.

2521111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521111 is an equidigital number, since it uses as much as digits as its factorization.

2521111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20, while the sum is 13.

The square root of 2521111 is about 1587.8006801863. The cubic root of 2521111 is about 136.1018376516.

Adding to 2521111 its reverse (1111252), we get a palindrome (3632363).

It can be divided in two parts, 252 and 1111, that multiplied together give a palindrome (279972).

The spelling of 2521111 in words is "two million, five hundred twenty-one thousand, one hundred eleven".