51560449 has 2 divisors, whose sum is σ = 51560450. Its totient is φ = 51560448.

The previous prime is 51560441. The next prime is 51560477. The reversal of 51560449 is 94406515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 294849 = 7160^2 + 543^2 .

It is a cyclic number.

It is not a de Polignac number, because 51560449 - 2³ = 51560441 is a prime.

It is not a weakly prime, because it can be changed into another prime (51560441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25780224 + 25780225.

It is an arithmetic number, because the mean of its divisors is an integer number (25780225).

It is a Proth number, since it is equal to 3147 ⋅ 2¹⁴ + 1 and 3147 < 2¹⁴.

Almost surely, 2^51560449 is an apocalyptic number.

It is an amenable number.

51560449 is a deficient number, since it is larger than the sum of its proper divisors (1).

51560449 is an equidigital number, since it uses as much as digits as its factorization.

51560449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 51560449 is about 7180.5604934434. The cubic root of 51560449 is about 372.1964531586.

The spelling of 51560449 in words is "fifty-one million, five hundred sixty thousand, four hundred forty-nine".