51605048 has 48 divisors (see below), whose sum is σ = 107730000. Its totient is φ = 23154560.

The previous prime is 51605039. The next prime is 51605063. The reversal of 51605048 is 84050615.

It is a happy number.

51605048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51605048.

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 11 ways as a sum of consecutive naturals, for example, 85853 + ... + 86451.

It is an arithmetic number, because the mean of its divisors is an integer number (2244375).

Almost surely, 2^51605048 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 51605048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53865000).

51605048 is an abundant number, since it is smaller than the sum of its proper divisors (56124952).

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

51605048 is a wasteful number, since it uses less digits than its factorization.

51605048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 51605048 is about 7183.6653596893. The cubic root of 51605048 is about 372.3037369785.

The spelling of 51605048 in words is "fifty-one million, six hundred five thousand, forty-eight".