51162857 has 2 divisors, whose sum is σ = 51162858. Its totient is φ = 51162856.

The previous prime is 51162841. The next prime is 51162869. The reversal of 51162857 is 75826115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45914176 + 5248681 = 6776^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 51162857 - 2⁴ = 51162841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51162887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25581428 + 25581429.

It is an arithmetic number, because the mean of its divisors is an integer number (25581429).

Almost surely, 2^51162857 is an apocalyptic number.

It is an amenable number.

51162857 is a deficient number, since it is larger than the sum of its proper divisors (1).

51162857 is an equidigital number, since it uses as much as digits as its factorization.

51162857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 35.

The square root of 51162857 is about 7152.8216110847. The cubic root of 51162857 is about 371.2372919804.

The spelling of 51162857 in words is "fifty-one million, one hundred sixty-two thousand, eight hundred fifty-seven".