51378328 has 16 divisors (see below), whose sum is σ = 97496280. Its totient is φ = 25379328.

The previous prime is 51378323. The next prime is 51378391. The reversal of 51378328 is 82387315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51378323) 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, 38025 + ... + 39352.

Almost surely, 2^51378328 is an apocalyptic number.

It is an amenable number.

51378328 is a deficient number, since it is larger than the sum of its proper divisors (46117952).

51378328 is a wasteful number, since it uses less digits than its factorization.

51378328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77466 (or 77462 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 51378328 is about 7167.8677443156. The cubic root of 51378328 is about 371.7577140475.

The spelling of 51378328 in words is "fifty-one million, three hundred seventy-eight thousand, three hundred twenty-eight".