51154157 has 2 divisors, whose sum is σ = 51154158. Its totient is φ = 51154156.

The previous prime is 51154111. The next prime is 51154163. The reversal of 51154157 is 75145115.

51154157 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., 36554116 + 14600041 = 6046^2 + 3821^2 .

It is a cyclic number.

It is not a de Polignac number, because 51154157 - 2¹⁴ = 51137773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51154657) 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, 25577078 + 25577079.

It is an arithmetic number, because the mean of its divisors is an integer number (25577079).

Almost surely, 2^51154157 is an apocalyptic number.

It is an amenable number.

51154157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51154157 is an equidigital number, since it uses as much as digits as its factorization.

51154157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3500, while the sum is 29.

The square root of 51154157 is about 7152.2134336162. The cubic root of 51154157 is about 371.2162484101.

The spelling of 51154157 in words is "fifty-one million, one hundred fifty-four thousand, one hundred fifty-seven".