51425417 has 2 divisors, whose sum is σ = 51425418. Its totient is φ = 51425416.

The previous prime is 51425383. The next prime is 51425431. The reversal of 51425417 is 71452415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 674041 = 7124^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 51425417 - 2⁸ = 51425161 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51425417.

It is not a weakly prime, because it can be changed into another prime (51425477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25712708 + 25712709.

It is an arithmetic number, because the mean of its divisors is an integer number (25712709).

Almost surely, 2^51425417 is an apocalyptic number.

It is an amenable number.

51425417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51425417 is an equidigital number, since it uses as much as digits as its factorization.

51425417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 29.

The square root of 51425417 is about 7171.1517206095. The cubic root of 51425417 is about 371.8712531882.

The spelling of 51425417 in words is "fifty-one million, four hundred twenty-five thousand, four hundred seventeen".