51329807 has 2 divisors, whose sum is σ = 51329808. Its totient is φ = 51329806.

The previous prime is 51329743. The next prime is 51329819. The reversal of 51329807 is 70892315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51329807 - 2⁶ = 51329743 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 (51329857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25664903 + 25664904.

It is an arithmetic number, because the mean of its divisors is an integer number (25664904).

Almost surely, 2^51329807 is an apocalyptic number.

51329807 is a deficient number, since it is larger than the sum of its proper divisors (1).

51329807 is an equidigital number, since it uses as much as digits as its factorization.

51329807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 51329807 is about 7164.4823260303. The cubic root of 51329807 is about 371.6406495314.

The spelling of 51329807 in words is "fifty-one million, three hundred twenty-nine thousand, eight hundred seven".