51444773 has 2 divisors, whose sum is σ = 51444774. Its totient is φ = 51444772.

The previous prime is 51444751. The next prime is 51444781. The reversal of 51444773 is 37744415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 1643524 = 7057^2 + 1282^2 .

It is a cyclic number.

It is not a de Polignac number, because 51444773 - 2¹² = 51440677 is a prime.

It is a Sophie Germain 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 (51444073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25722386 + 25722387.

It is an arithmetic number, because the mean of its divisors is an integer number (25722387).

Almost surely, 2^51444773 is an apocalyptic number.

It is an amenable number.

51444773 is a deficient number, since it is larger than the sum of its proper divisors (1).

51444773 is an equidigital number, since it uses as much as digits as its factorization.

51444773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 35.

The square root of 51444773 is about 7172.5011676541. The cubic root of 51444773 is about 371.9179035122.

The spelling of 51444773 in words is "fifty-one million, four hundred forty-four thousand, seven hundred seventy-three".