51105319 has 2 divisors, whose sum is σ = 51105320. Its totient is φ = 51105318.

The previous prime is 51105317. The next prime is 51105331. The reversal of 51105319 is 91350115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51105319 - 2¹ = 51105317 is a prime.

It is a super-2 number, since 2×51105319² = 5223507260183522, which contains 22 as substring.

Together with 51105317, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51105293 and 51105302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51105317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552659 + 25552660.

It is an arithmetic number, because the mean of its divisors is an integer number (25552660).

Almost surely, 2^51105319 is an apocalyptic number.

51105319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51105319 is an equidigital number, since it uses as much as digits as its factorization.

51105319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 51105319 is about 7148.7984305056. The cubic root of 51105319 is about 371.0980746859.

The spelling of 51105319 in words is "fifty-one million, one hundred five thousand, three hundred nineteen".