51007111 has 2 divisors, whose sum is σ = 51007112. Its totient is φ = 51007110.

The previous prime is 51007109. The next prime is 51007133. The reversal of 51007111 is 11170015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51007111 - 2¹ = 51007109 is a prime.

Together with 51007109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51007171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25503555 + 25503556.

It is an arithmetic number, because the mean of its divisors is an integer number (25503556).

Almost surely, 2^51007111 is an apocalyptic number.

51007111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51007111 is an equidigital number, since it uses as much as digits as its factorization.

51007111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35, while the sum is 16.

The square root of 51007111 is about 7141.9262807733. The cubic root of 51007111 is about 370.8602118407.

Adding to 51007111 its reverse (11170015), we get a palindrome (62177126).

The spelling of 51007111 in words is "fifty-one million, seven thousand, one hundred eleven".