51695028 has 144 divisors (see below), whose sum is σ = 172658304. Its totient is φ = 12625920.

The previous prime is 51695003. The next prime is 51695041. The reversal of 51695028 is 82059615.

It is a happy number.

51695028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 51694983 and 51695001.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 46576 + ... + 47672.

It is an arithmetic number, because the mean of its divisors is an integer number (1199016).

Almost surely, 2^51695028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51695028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86329152).

51695028 is an abundant number, since it is smaller than the sum of its proper divisors (120963276).

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

51695028 is a wasteful number, since it uses less digits than its factorization.

51695028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 51695028 is about 7189.9254516302. The cubic root of 51695028 is about 372.5199977253.

The spelling of 51695028 in words is "fifty-one million, six hundred ninety-five thousand, twenty-eight".