51796861 has 2 divisors, whose sum is σ = 51796862. Its totient is φ = 51796860.

The previous prime is 51796859. The next prime is 51796873. The reversal of 51796861 is 16869715.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48734361 + 3062500 = 6981^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 51796861 - 2¹ = 51796859 is a prime.

Together with 51796859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51796891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25898430 + 25898431.

It is an arithmetic number, because the mean of its divisors is an integer number (25898431).

Almost surely, 2^51796861 is an apocalyptic number.

It is an amenable number.

51796861 is a deficient number, since it is larger than the sum of its proper divisors (1).

51796861 is an equidigital number, since it uses as much as digits as its factorization.

51796861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The square root of 51796861 is about 7197.0036126155. The cubic root of 51796861 is about 372.7644438458.

The spelling of 51796861 in words is "fifty-one million, seven hundred ninety-six thousand, eight hundred sixty-one".