51383798 has 8 divisors (see below), whose sum is σ = 77319792. Its totient is φ = 25610536.

The previous prime is 51383797. The next prime is 51383821. The reversal of 51383798 is 89738315.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51383791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39890 + ... + 41157.

It is an arithmetic number, because the mean of its divisors is an integer number (9664974).

Almost surely, 2^51383798 is an apocalyptic number.

51383798 is a deficient number, since it is larger than the sum of its proper divisors (25935994).

51383798 is a wasteful number, since it uses less digits than its factorization.

51383798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81366.

The product of its digits is 181440, while the sum is 44.

The square root of 51383798 is about 7168.2492981201. The cubic root of 51383798 is about 371.7709066562.

The spelling of 51383798 in words is "fifty-one million, three hundred eighty-three thousand, seven hundred ninety-eight".