51079649 has 2 divisors, whose sum is σ = 51079650. Its totient is φ = 51079648.

The previous prime is 51079627. The next prime is 51079667. The reversal of 51079649 is 94697015.

51079649 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., 41667025 + 9412624 = 6455^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 51079649 - 2¹⁶ = 51014113 is a prime.

It is not a weakly prime, because it can be changed into another prime (51079349) 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, 25539824 + 25539825.

It is an arithmetic number, because the mean of its divisors is an integer number (25539825).

Almost surely, 2^51079649 is an apocalyptic number.

It is an amenable number.

51079649 is a deficient number, since it is larger than the sum of its proper divisors (1).

51079649 is an equidigital number, since it uses as much as digits as its factorization.

51079649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 51079649 is about 7147.0027983764. The cubic root of 51079649 is about 371.0359305804.

The spelling of 51079649 in words is "fifty-one million, seventy-nine thousand, six hundred forty-nine".