51392719 has 16 divisors (see below), whose sum is σ = 60264000. Its totient is φ = 43808352.

The previous prime is 51392707. The next prime is 51392723. The reversal of 51392719 is 91729315.

It is not a de Polignac number, because 51392719 - 2²¹ = 49295567 is a prime.

It is a super-2 number, since 2×51392719² = 5282423132425922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51392729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91989 + ... + 92545.

It is an arithmetic number, because the mean of its divisors is an integer number (3766500).

Almost surely, 2^51392719 is an apocalyptic number.

51392719 is a deficient number, since it is larger than the sum of its proper divisors (8871281).

51392719 is an equidigital number, since it uses as much as digits as its factorization.

51392719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 833 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 51392719 is about 7168.8715290483. The cubic root of 51392719 is about 371.7924204178.

The spelling of 51392719 in words is "fifty-one million, three hundred ninety-two thousand, seven hundred nineteen".