51286373 has 2 divisors, whose sum is σ = 51286374. Its totient is φ = 51286372.

The previous prime is 51286357. The next prime is 51286379. The reversal of 51286373 is 37368215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26853124 + 24433249 = 5182^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 51286373 - 2⁴ = 51286357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51286379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25643186 + 25643187.

It is an arithmetic number, because the mean of its divisors is an integer number (25643187).

Almost surely, 2^51286373 is an apocalyptic number.

It is an amenable number.

51286373 is a deficient number, since it is larger than the sum of its proper divisors (1).

51286373 is an equidigital number, since it uses as much as digits as its factorization.

51286373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 51286373 is about 7161.4504815715. The cubic root of 51286373 is about 371.5357956073.

The spelling of 51286373 in words is "fifty-one million, two hundred eighty-six thousand, three hundred seventy-three".