51154109 has 2 divisors, whose sum is σ = 51154110. Its totient is φ = 51154108.

The previous prime is 51154087. The next prime is 51154111. The reversal of 51154109 is 90145115.

51154109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28922884 + 22231225 = 5378^2 + 4715^2 .

It is a cyclic number.

It is not a de Polignac number, because 51154109 - 2¹² = 51150013 is a prime.

Together with 51154111, 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 (51154199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577054 + 25577055.

It is an arithmetic number, because the mean of its divisors is an integer number (25577055).

Almost surely, 2^51154109 is an apocalyptic number.

It is an amenable number.

51154109 is a deficient number, since it is larger than the sum of its proper divisors (1).

51154109 is an equidigital number, since it uses as much as digits as its factorization.

51154109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 51154109 is about 7152.2100780109. The cubic root of 51154109 is about 371.2161323010.

The spelling of 51154109 in words is "fifty-one million, one hundred fifty-four thousand, one hundred nine".