51270211 has 2 divisors, whose sum is σ = 51270212. Its totient is φ = 51270210.

The previous prime is 51270203. The next prime is 51270217. The reversal of 51270211 is 11207215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51270211 - 2³ = 51270203 is a prime.

It is not a weakly prime, because it can be changed into another prime (51270217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25635105 + 25635106.

It is an arithmetic number, because the mean of its divisors is an integer number (25635106).

Almost surely, 2^51270211 is an apocalyptic number.

51270211 is a deficient number, since it is larger than the sum of its proper divisors (1).

51270211 is an equidigital number, since it uses as much as digits as its factorization.

51270211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 51270211 is about 7160.3219899667. The cubic root of 51270211 is about 371.4967638460.

Adding to 51270211 its reverse (11207215), we get a palindrome (62477426).

The spelling of 51270211 in words is "fifty-one million, two hundred seventy thousand, two hundred eleven".