51280693 has 2 divisors, whose sum is σ = 51280694. Its totient is φ = 51280692.

The previous prime is 51280681. The next prime is 51280711. The reversal of 51280693 is 39608215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40666129 + 10614564 = 6377^2 + 3258^2 .

It is a cyclic number.

It is not a de Polignac number, because 51280693 - 2⁹ = 51280181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51280633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25640346 + 25640347.

It is an arithmetic number, because the mean of its divisors is an integer number (25640347).

Almost surely, 2^51280693 is an apocalyptic number.

It is an amenable number.

51280693 is a deficient number, since it is larger than the sum of its proper divisors (1).

51280693 is an equidigital number, since it uses as much as digits as its factorization.

51280693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 51280693 is about 7161.0539028833. The cubic root of 51280693 is about 371.5220791553.

The spelling of 51280693 in words is "fifty-one million, two hundred eighty thousand, six hundred ninety-three".