51378327 has 64 divisors (see below), whose sum is σ = 102251520. Its totient is φ = 24624000.

The previous prime is 51378323. The next prime is 51378391. The reversal of 51378327 is 72387315.

It is not a de Polignac number, because 51378327 - 2² = 51378323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51378291 and 51378300.

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 63 ways as a sum of consecutive naturals, for example, 26077 + ... + 27977.

It is an arithmetic number, because the mean of its divisors is an integer number (1597680).

Almost surely, 2^51378327 is an apocalyptic number.

51378327 is a deficient number, since it is larger than the sum of its proper divisors (50873193).

51378327 is a wasteful number, since it uses less digits than its factorization.

51378327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1935 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 51378327 is about 7167.8676745598. The cubic root of 51378327 is about 371.7577116356.

The spelling of 51378327 in words is "fifty-one million, three hundred seventy-eight thousand, three hundred twenty-seven".