51238927 has 2 divisors, whose sum is σ = 51238928. Its totient is φ = 51238926.

The previous prime is 51238921. The next prime is 51238931. The reversal of 51238927 is 72983215.

51238927 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51238927 - 2¹⁹ = 50714639 is a prime.

It is a super-2 number, since 2×51238927² = 5250855280222658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51238921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25619463 + 25619464.

It is an arithmetic number, because the mean of its divisors is an integer number (25619464).

Almost surely, 2^51238927 is an apocalyptic number.

51238927 is a deficient number, since it is larger than the sum of its proper divisors (1).

51238927 is an equidigital number, since it uses as much as digits as its factorization.

51238927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 51238927 is about 7158.1371179938. The cubic root of 51238927 is about 371.4211886459.

The spelling of 51238927 in words is "fifty-one million, two hundred thirty-eight thousand, nine hundred twenty-seven".