51301669 has 2 divisors, whose sum is σ = 51301670. Its totient is φ = 51301668.

The previous prime is 51301571. The next prime is 51301681. The reversal of 51301669 is 96610315.

51301669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37149025 + 14152644 = 6095^2 + 3762^2 .

It is a cyclic number.

It is not a de Polignac number, because 51301669 - 2⁷ = 51301541 is a prime.

It is a super-2 number, since 2×51301669² = 5263722484371122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51301669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51311669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25650834 + 25650835.

It is an arithmetic number, because the mean of its divisors is an integer number (25650835).

Almost surely, 2^51301669 is an apocalyptic number.

It is an amenable number.

51301669 is a deficient number, since it is larger than the sum of its proper divisors (1).

51301669 is an equidigital number, since it uses as much as digits as its factorization.

51301669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 51301669 is about 7162.5183420359. The cubic root of 51301669 is about 371.5727283980.

The spelling of 51301669 in words is "fifty-one million, three hundred one thousand, six hundred sixty-nine".