51108019 has 2 divisors, whose sum is σ = 51108020. Its totient is φ = 51108018.

The previous prime is 51108007. The next prime is 51108041. The reversal of 51108019 is 91080115.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51108019 is a prime.

It is a super-2 number, since 2×51108019² = 5224059212208722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51107984 and 51108002.

It is not a weakly prime, because it can be changed into another prime (51108049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25554009 + 25554010.

It is an arithmetic number, because the mean of its divisors is an integer number (25554010).

Almost surely, 2^51108019 is an apocalyptic number.

51108019 is a deficient number, since it is larger than the sum of its proper divisors (1).

51108019 is an equidigital number, since it uses as much as digits as its factorization.

51108019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 51108019 is about 7148.9872709357. The cubic root of 51108019 is about 371.1046098644.

The spelling of 51108019 in words is "fifty-one million, one hundred eight thousand, nineteen".