51223427 has 2 divisors, whose sum is σ = 51223428. Its totient is φ = 51223426.

The previous prime is 51223423. The next prime is 51223433. The reversal of 51223427 is 72432215.

51223427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51223427 - 2² = 51223423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51223396 and 51223405.

It is not a weakly prime, because it can be changed into another prime (51223423) 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, 25611713 + 25611714.

It is an arithmetic number, because the mean of its divisors is an integer number (25611714).

Almost surely, 2^51223427 is an apocalyptic number.

51223427 is a deficient number, since it is larger than the sum of its proper divisors (1).

51223427 is an equidigital number, since it uses as much as digits as its factorization.

51223427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 26.

The square root of 51223427 is about 7157.0543521759. The cubic root of 51223427 is about 371.3837326896.

The spelling of 51223427 in words is "fifty-one million, two hundred twenty-three thousand, four hundred twenty-seven".