51830778 has 8 divisors (see below), whose sum is σ = 103661568. Its totient is φ = 17276924.

The previous prime is 51830777. The next prime is 51830783. The reversal of 51830778 is 87703815.

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

51830778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51830771) 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, 4319226 + ... + 4319237.

It is an arithmetic number, because the mean of its divisors is an integer number (12957696).

Almost surely, 2^51830778 is an apocalyptic number.

51830778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51830778 is a wasteful number, since it uses less digits than its factorization.

51830778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8638468.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 51830778 is about 7199.3595548493. The cubic root of 51830778 is about 372.8457891423.

The spelling of 51830778 in words is "fifty-one million, eight hundred thirty thousand, seven hundred seventy-eight".