51425243 has 2 divisors, whose sum is σ = 51425244. Its totient is φ = 51425242.

The previous prime is 51425239. The next prime is 51425273. The reversal of 51425243 is 34252415.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51425243 - 2² = 51425239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51425203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25712621 + 25712622.

It is an arithmetic number, because the mean of its divisors is an integer number (25712622).

Almost surely, 2^51425243 is an apocalyptic number.

51425243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51425243 is an equidigital number, since it uses as much as digits as its factorization.

51425243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 51425243 is about 7171.1395886567. The cubic root of 51425243 is about 371.8708337739.

Adding to 51425243 its reverse (34252415), we get a palindrome (85677658).

The spelling of 51425243 in words is "fifty-one million, four hundred twenty-five thousand, two hundred forty-three".