56117111 has 2 divisors, whose sum is σ = 56117112. Its totient is φ = 56117110.

The previous prime is 56117101. The next prime is 56117147. The reversal of 56117111 is 11171165.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56117111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56117101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28058555 + 28058556.

It is an arithmetic number, because the mean of its divisors is an integer number (28058556).

Almost surely, 2^56117111 is an apocalyptic number.

56117111 is a deficient number, since it is larger than the sum of its proper divisors (1).

56117111 is an equidigital number, since it uses as much as digits as its factorization.

56117111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210, while the sum is 23.

The square root of 56117111 is about 7491.1354947031. The cubic root of 56117111 is about 382.8527476251.

Adding to 56117111 its reverse (11171165), we get a palindrome (67288276).

It can be divided in two parts, 5 and 6117111, that added together give a palindrome (6117116).

The spelling of 56117111 in words is "fifty-six million, one hundred seventeen thousand, one hundred eleven".