51132769 has 2 divisors, whose sum is σ = 51132770. Its totient is φ = 51132768.

The previous prime is 51132761. The next prime is 51132791. The reversal of 51132769 is 96723115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50239744 + 893025 = 7088^2 + 945^2 .

It is a cyclic number.

It is not a de Polignac number, because 51132769 - 2³ = 51132761 is a prime.

It is a super-2 number, since 2×51132769² = 5229120131214722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51132761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25566384 + 25566385.

It is an arithmetic number, because the mean of its divisors is an integer number (25566385).

Almost surely, 2^51132769 is an apocalyptic number.

It is an amenable number.

51132769 is a deficient number, since it is larger than the sum of its proper divisors (1).

51132769 is an equidigital number, since it uses as much as digits as its factorization.

51132769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 51132769 is about 7150.7180758299. The cubic root of 51132769 is about 371.1645049457.

The spelling of 51132769 in words is "fifty-one million, one hundred thirty-two thousand, seven hundred sixty-nine".