51764213 has 2 divisors, whose sum is σ = 51764214. Its totient is φ = 51764212.

The previous prime is 51764179. The next prime is 51764243. The reversal of 51764213 is 31246715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 24964 = 7193^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 51764213 - 2¹² = 51760117 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51764243) 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, 25882106 + 25882107.

It is an arithmetic number, because the mean of its divisors is an integer number (25882107).

Almost surely, 2^51764213 is an apocalyptic number.

It is an amenable number.

51764213 is a deficient number, since it is larger than the sum of its proper divisors (1).

51764213 is an equidigital number, since it uses as much as digits as its factorization.

51764213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 51764213 is about 7194.7350889383. The cubic root of 51764213 is about 372.6861085234.

The spelling of 51764213 in words is "fifty-one million, seven hundred sixty-four thousand, two hundred thirteen".