51550349 has 2 divisors, whose sum is σ = 51550350. Its totient is φ = 51550348.

The previous prime is 51550339. The next prime is 51550379. The reversal of 51550349 is 94305515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44222500 + 7327849 = 6650^2 + 2707^2 .

It is a cyclic number.

It is not a de Polignac number, because 51550349 - 2⁴ = 51550333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51550309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25775174 + 25775175.

It is an arithmetic number, because the mean of its divisors is an integer number (25775175).

Almost surely, 2^51550349 is an apocalyptic number.

It is an amenable number.

51550349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51550349 is an equidigital number, since it uses as much as digits as its factorization.

51550349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 51550349 is about 7179.8571712813. The cubic root of 51550349 is about 372.1721488082.

The spelling of 51550349 in words is "fifty-one million, five hundred fifty thousand, three hundred forty-nine".