51072319 has 2 divisors, whose sum is σ = 51072320. Its totient is φ = 51072318.

The previous prime is 51072317. The next prime is 51072331. The reversal of 51072319 is 91327015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51072319 - 2¹ = 51072317 is a prime.

It is a super-2 number, since 2×51072319² = 5216763536075522, which contains 22 as substring.

Together with 51072317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51072313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25536159 + 25536160.

It is an arithmetic number, because the mean of its divisors is an integer number (25536160).

Almost surely, 2^51072319 is an apocalyptic number.

51072319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51072319 is an equidigital number, since it uses as much as digits as its factorization.

51072319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 51072319 is about 7146.4899776044. The cubic root of 51072319 is about 371.0181816757.

The spelling of 51072319 in words is "fifty-one million, seventy-two thousand, three hundred nineteen".