51080111 has 2 divisors, whose sum is σ = 51080112. Its totient is φ = 51080110.

The previous prime is 51080093. The next prime is 51080131. The reversal of 51080111 is 11108015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51080111 - 2⁶ = 51080047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51080111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51080131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25540055 + 25540056.

It is an arithmetic number, because the mean of its divisors is an integer number (25540056).

Almost surely, 2^51080111 is an apocalyptic number.

51080111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51080111 is an equidigital number, since it uses as much as digits as its factorization.

51080111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 17.

The square root of 51080111 is about 7147.0351195443. The cubic root of 51080111 is about 371.0370492130.

Adding to 51080111 its reverse (11108015), we get a palindrome (62188126).

The spelling of 51080111 in words is "fifty-one million, eighty thousand, one hundred eleven".