51319019 has 8 divisors (see below), whose sum is σ = 54527040. Its totient is φ = 48161736.

The previous prime is 51319007. The next prime is 51319031. The reversal of 51319019 is 91091315.

51319019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51319007) and next prime (51319031).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51319019 is a prime.

It is a super-2 number, since 2×51319019² = 5267283422244722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51318982 and 51319000.

It is not an unprimeable number, because it can be changed into a prime (51319519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10589 + ... + 14654.

It is an arithmetic number, because the mean of its divisors is an integer number (6815880).

Almost surely, 2^51319019 is an apocalyptic number.

51319019 is a deficient number, since it is larger than the sum of its proper divisors (3208021).

51319019 is a wasteful number, since it uses less digits than its factorization.

51319019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25369.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 51319019 is about 7163.7294058332. The cubic root of 51319019 is about 371.6146117671.

The spelling of 51319019 in words is "fifty-one million, three hundred nineteen thousand, nineteen".