51996911 has 2 divisors, whose sum is σ = 51996912. Its totient is φ = 51996910.

The previous prime is 51996907. The next prime is 51996937. The reversal of 51996911 is 11969915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51996911 - 2² = 51996907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51996011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25998455 + 25998456.

It is an arithmetic number, because the mean of its divisors is an integer number (25998456).

Almost surely, 2^51996911 is an apocalyptic number.

51996911 is a deficient number, since it is larger than the sum of its proper divisors (1).

51996911 is an equidigital number, since it uses as much as digits as its factorization.

51996911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21870, while the sum is 41.

The square root of 51996911 is about 7210.8883641338. Note that the first 3 decimals coincide. The cubic root of 51996911 is about 373.2437246848.

The spelling of 51996911 in words is "fifty-one million, nine hundred ninety-six thousand, nine hundred eleven".