51174157 has 2 divisors, whose sum is σ = 51174158. Its totient is φ = 51174156.

The previous prime is 51174139. The next prime is 51174161. The reversal of 51174157 is 75147115.

It is a happy number.

51174157 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., 50424201 + 749956 = 7101^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 51174157 - 2¹⁹ = 50649869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51174107) 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, 25587078 + 25587079.

It is an arithmetic number, because the mean of its divisors is an integer number (25587079).

Almost surely, 2^51174157 is an apocalyptic number.

It is an amenable number.

51174157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51174157 is an equidigital number, since it uses as much as digits as its factorization.

51174157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4900, while the sum is 31.

The square root of 51174157 is about 7153.6114655466. The cubic root of 51174157 is about 371.2646208725.

It can be divided in two parts, 5 and 1174157, that multiplied together give a palindrome (5870785).

The spelling of 51174157 in words is "fifty-one million, one hundred seventy-four thousand, one hundred fifty-seven".