51582078 has 48 divisors (see below), whose sum is σ = 116678016. Its totient is φ = 16450560.

The previous prime is 51582071. The next prime is 51582079. The reversal of 51582078 is 87028515.

51582078 is a `hidden beast` number, since 5 + 1 + 582 + 0 + 78 = 666.

51582078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51582071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53650 + ... + 54602.

It is an arithmetic number, because the mean of its divisors is an integer number (2430792).

Almost surely, 2^51582078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51582078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58339008).

51582078 is an abundant number, since it is smaller than the sum of its proper divisors (65095938).

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

51582078 is a wasteful number, since it uses less digits than its factorization.

51582078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 51582078 is about 7182.0664157330. The cubic root of 51582078 is about 372.2484898899.

The spelling of 51582078 in words is "fifty-one million, five hundred eighty-two thousand, seventy-eight".