51378326 has 4 divisors (see below), whose sum is σ = 77067492. Its totient is φ = 25689162.

The previous prime is 51378323. The next prime is 51378391. The reversal of 51378326 is 62387315.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 12844580 + ... + 12844583.

It is an arithmetic number, because the mean of its divisors is an integer number (19266873).

Almost surely, 2^51378326 is an apocalyptic number.

51378326 is a deficient number, since it is larger than the sum of its proper divisors (25689166).

51378326 is a wasteful number, since it uses less digits than its factorization.

51378326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25689165.

The product of its digits is 30240, while the sum is 35.

The square root of 51378326 is about 7167.8676048041. The cubic root of 51378326 is about 371.7577092237.

The spelling of 51378326 in words is "fifty-one million, three hundred seventy-eight thousand, three hundred twenty-six".