7256111 has 2 divisors, whose sum is σ = 7256112. Its totient is φ = 7256110.

The previous prime is 7256099. The next prime is 7256113. The reversal of 7256111 is 1116527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7256111 - 2⁶ = 7256047 is a prime.

It is a super-2 number, since 2×7256111² = 105302293688642, which contains 22 as substring.

Together with 7256113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7256113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628055 + 3628056.

It is an arithmetic number, because the mean of its divisors is an integer number (3628056).

Almost surely, 2^7256111 is an apocalyptic number.

7256111 is a deficient number, since it is larger than the sum of its proper divisors (1).

7256111 is an equidigital number, since it uses as much as digits as its factorization.

7256111 is an evil number, because the sum of its binary digits is even.

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

The square root of 7256111 is about 2693.7169487532. The cubic root of 7256111 is about 193.5981959028.

The spelling of 7256111 in words is "seven million, two hundred fifty-six thousand, one hundred eleven".