51392773 has 2 divisors, whose sum is σ = 51392774. Its totient is φ = 51392772.

The previous prime is 51392767. The next prime is 51392791. The reversal of 51392773 is 37729315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 9622404 = 6463^2 + 3102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51392773 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51392723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25696386 + 25696387.

It is an arithmetic number, because the mean of its divisors is an integer number (25696387).

Almost surely, 2^51392773 is an apocalyptic number.

It is an amenable number.

51392773 is a deficient number, since it is larger than the sum of its proper divisors (1).

51392773 is an equidigital number, since it uses as much as digits as its factorization.

51392773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 37.

The square root of 51392773 is about 7168.8752953305. The cubic root of 51392773 is about 371.7925506359.

The spelling of 51392773 in words is "fifty-one million, three hundred ninety-two thousand, seven hundred seventy-three".