51378376 has 16 divisors (see below), whose sum is σ = 110096640. Its totient is φ = 22019280.

The previous prime is 51378323. The next prime is 51378391. The reversal of 51378376 is 67387315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458680 + ... + 458791.

It is an arithmetic number, because the mean of its divisors is an integer number (6881040).

Almost surely, 2^51378376 is an apocalyptic number.

51378376 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51378376 is an abundant number, since it is smaller than the sum of its proper divisors (58718264).

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

51378376 is a wasteful number, since it uses less digits than its factorization.

51378376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917484 (or 917480 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 51378376 is about 7167.8710925909. The cubic root of 51378376 is about 371.7578298185.

The spelling of 51378376 in words is "fifty-one million, three hundred seventy-eight thousand, three hundred seventy-six".