56122211 has 2 divisors, whose sum is σ = 56122212. Its totient is φ = 56122210.

The previous prime is 56122169. The next prime is 56122217. The reversal of 56122211 is 11222165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56122211 - 2¹⁸ = 55860067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56122217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28061105 + 28061106.

It is an arithmetic number, because the mean of its divisors is an integer number (28061106).

Almost surely, 2^56122211 is an apocalyptic number.

56122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

56122211 is an equidigital number, since it uses as much as digits as its factorization.

56122211 is an evil number, because the sum of its binary digits is even.

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

The square root of 56122211 is about 7491.4758893025. The cubic root of 56122211 is about 382.8643453346.

Adding to 56122211 its reverse (11222165), we get a palindrome (67344376).

It can be divided in two parts, 5 and 6122211, that added together give a palindrome (6122216).

The spelling of 56122211 in words is "fifty-six million, one hundred twenty-two thousand, two hundred eleven".