51827129 has 2 divisors, whose sum is σ = 51827130. Its totient is φ = 51827128.

The previous prime is 51827099. The next prime is 51827131. The reversal of 51827129 is 92172815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45873529 + 5953600 = 6773^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 51827129 - 2¹² = 51823033 is a prime.

It is a Sophie Germain prime.

Together with 51827131, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51827189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913564 + 25913565.

It is an arithmetic number, because the mean of its divisors is an integer number (25913565).

Almost surely, 2^51827129 is an apocalyptic number.

It is an amenable number.

51827129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51827129 is an equidigital number, since it uses as much as digits as its factorization.

51827129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 51827129 is about 7199.1061250686. The cubic root of 51827129 is about 372.8370392176.

The spelling of 51827129 in words is "fifty-one million, eight hundred twenty-seven thousand, one hundred twenty-nine".