51830797 has 2 divisors, whose sum is σ = 51830798. Its totient is φ = 51830796.

The previous prime is 51830789. The next prime is 51830819. The reversal of 51830797 is 79703815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50424201 + 1406596 = 7101^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 51830797 - 2³ = 51830789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51830777) 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, 25915398 + 25915399.

It is an arithmetic number, because the mean of its divisors is an integer number (25915399).

Almost surely, 2^51830797 is an apocalyptic number.

It is an amenable number.

51830797 is a deficient number, since it is larger than the sum of its proper divisors (1).

51830797 is an equidigital number, since it uses as much as digits as its factorization.

51830797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 51830797 is about 7199.3608744110. The cubic root of 51830797 is about 372.8458347013.

The spelling of 51830797 in words is "fifty-one million, eight hundred thirty thousand, seven hundred ninety-seven".