51816049 has 2 divisors, whose sum is σ = 51816050. Its totient is φ = 51816048.

The previous prime is 51816029. The next prime is 51816053. The reversal of 51816049 is 94061815.

51816049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50865424 + 950625 = 7132^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 51816049 - 2⁷ = 51815921 is a prime.

It is not a weakly prime, because it can be changed into another prime (51816019) 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, 25908024 + 25908025.

It is an arithmetic number, because the mean of its divisors is an integer number (25908025).

Almost surely, 2^51816049 is an apocalyptic number.

It is an amenable number.

51816049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51816049 is an equidigital number, since it uses as much as digits as its factorization.

51816049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 51816049 is about 7198.3365439524. The cubic root of 51816049 is about 372.8104680061.

The spelling of 51816049 in words is "fifty-one million, eight hundred sixteen thousand, forty-nine".