51419 has 2 divisors, whose sum is σ = 51420.
Its totient is φ = 51418.
The previous prime is 51413. The next prime is 51421. The reversal of 51419 is 91415.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-51419 is a prime.
It is a super-2 number, since 2×514192 = 5287827122, which contains 22 as substring.
Together with 51421, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 51419.
It is not a weakly prime, because it can be changed into another prime (51413) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25709 + 25710.
It is an arithmetic number, because the mean of its divisors is an integer number (25710).
251419 is an apocalyptic number.
51419 is a deficient number, since it is larger than the sum of its proper divisors (1).
51419 is an equidigital number, since it uses as much as digits as its factorization.
51419 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 180, while the sum is 20.
The square root of 51419 is about 226.7575798072.
The cubic root of 51419 is about 37.1855784851.
The spelling of 51419 in words is "fifty-one thousand, four hundred nineteen".