51121244227 has 2 divisors, whose sum is σ = 51121244228. Its totient is φ = 51121244226.

The previous prime is 51121244191. The next prime is 51121244243. The reversal of 51121244227 is 72244212115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51121244227 - 2⁷ = 51121244099 is a prime.

It is a super-2 number, since 2×51121244227² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51121244327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560622113 + 25560622114.

It is an arithmetic number, because the mean of its divisors is an integer number (25560622114).

Almost surely, 2^51121244227 is an apocalyptic number.

51121244227 is a deficient number, since it is larger than the sum of its proper divisors (1).

51121244227 is an equidigital number, since it uses as much as digits as its factorization.

51121244227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 31.

The spelling of 51121244227 in words is "fifty-one billion, one hundred twenty-one million, two hundred forty-four thousand, two hundred twenty-seven".