51019392 has 32 divisors (see below), whose sum is σ = 135521280. Its totient is φ = 17006336.

The previous prime is 51019379. The next prime is 51019399. The reversal of 51019392 is 29391015.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (51019399) 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, 66048 + ... + 66815.

It is an arithmetic number, because the mean of its divisors is an integer number (4235040).

Almost surely, 2^51019392 is an apocalyptic number.

It is an amenable number.

51019392 is an abundant number, since it is smaller than the sum of its proper divisors (84501888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51019392 is a wasteful number, since it uses less digits than its factorization.

51019392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132880 (or 132868 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 51019392 is about 7142.7860110744. The cubic root of 51019392 is about 370.8899735000.

The spelling of 51019392 in words is "fifty-one million, nineteen thousand, three hundred ninety-two".