51111227 has 2 divisors, whose sum is σ = 51111228. Its totient is φ = 51111226.

The previous prime is 51111217. The next prime is 51111233. The reversal of 51111227 is 72211115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51111227 - 2⁴ = 51111211 is a prime.

It is a super-2 number, since 2×51111227² = 5224715050891058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51111199 and 51111208.

It is not a weakly prime, because it can be changed into another prime (51111217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555613 + 25555614.

It is an arithmetic number, because the mean of its divisors is an integer number (25555614).

Almost surely, 2^51111227 is an apocalyptic number.

51111227 is a deficient number, since it is larger than the sum of its proper divisors (1).

51111227 is an equidigital number, since it uses as much as digits as its factorization.

51111227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140, while the sum is 20.

The square root of 51111227 is about 7149.2116348588. The cubic root of 51111227 is about 371.1123743256.

The spelling of 51111227 in words is "fifty-one million, one hundred eleven thousand, two hundred twenty-seven".