51192419 has 4 divisors (see below), whose sum is σ = 51214344. Its totient is φ = 51170496.

The previous prime is 51192397. The next prime is 51192433. The reversal of 51192419 is 91429115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91429115 = 5 ⋅18285823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51192419 is a prime.

It is a super-2 number, since 2×51192419² = 5241327526143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51192469) 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 3 ways as a sum of consecutive naturals, for example, 6977 + ... + 12290.

It is an arithmetic number, because the mean of its divisors is an integer number (12803586).

Almost surely, 2^51192419 is an apocalyptic number.

51192419 is a deficient number, since it is larger than the sum of its proper divisors (21925).

51192419 is a wasteful number, since it uses less digits than its factorization.

51192419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21924.

The product of its digits is 3240, while the sum is 32.

The square root of 51192419 is about 7154.8877699095. The cubic root of 51192419 is about 371.3087787610.

The spelling of 51192419 in words is "fifty-one million, one hundred ninety-two thousand, four hundred nineteen".