51266773 has 2 divisors, whose sum is σ = 51266774. Its totient is φ = 51266772.

The previous prime is 51266749. The next prime is 51266791. The reversal of 51266773 is 37766215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35916049 + 15350724 = 5993^2 + 3918^2 .

It is a cyclic number.

It is not a de Polignac number, because 51266773 - 2⁹ = 51266261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51266723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25633386 + 25633387.

It is an arithmetic number, because the mean of its divisors is an integer number (25633387).

Almost surely, 2^51266773 is an apocalyptic number.

It is an amenable number.

51266773 is a deficient number, since it is larger than the sum of its proper divisors (1).

51266773 is an equidigital number, since it uses as much as digits as its factorization.

51266773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 51266773 is about 7160.0819129393. The cubic root of 51266773 is about 371.4884599050.

The spelling of 51266773 in words is "fifty-one million, two hundred sixty-six thousand, seven hundred seventy-three".