51490799 has 2 divisors, whose sum is σ = 51490800. Its totient is φ = 51490798.

The previous prime is 51490787. The next prime is 51490811. The reversal of 51490799 is 99709415.

It is a balanced prime because it is at equal distance from previous prime (51490787) and next prime (51490811).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51490799 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 (51490099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25745399 + 25745400.

It is an arithmetic number, because the mean of its divisors is an integer number (25745400).

Almost surely, 2^51490799 is an apocalyptic number.

51490799 is a deficient number, since it is larger than the sum of its proper divisors (1).

51490799 is an equidigital number, since it uses as much as digits as its factorization.

51490799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 51490799 is about 7175.7089545215. The cubic root of 51490799 is about 372.0287848193.

The spelling of 51490799 in words is "fifty-one million, four hundred ninety thousand, seven hundred ninety-nine".