51071227 has 2 divisors, whose sum is σ = 51071228. Its totient is φ = 51071226.

The previous prime is 51071197. The next prime is 51071231. The reversal of 51071227 is 72217015.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51071227 is a prime.

It is not a weakly prime, because it can be changed into another prime (51071287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25535613 + 25535614.

It is an arithmetic number, because the mean of its divisors is an integer number (25535614).

Almost surely, 2^51071227 is an apocalyptic number.

51071227 is a deficient number, since it is larger than the sum of its proper divisors (1).

51071227 is an equidigital number, since it uses as much as digits as its factorization.

51071227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 51071227 is about 7146.4135760534. The cubic root of 51071227 is about 371.0155373552.

The spelling of 51071227 in words is "fifty-one million, seventy-one thousand, two hundred twenty-seven".