51848388 has 18 divisors (see below), whose sum is σ = 131061294. Its totient is φ = 17282784.

The previous prime is 51848387. The next prime is 51848429. The reversal of 51848388 is 88384815.

It can be written as a sum of positive squares in only one way, i.e., 35784324 + 16064064 = 5982^2 + 4008^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (51848387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 720081 + ... + 720152.

It is an arithmetic number, because the mean of its divisors is an integer number (7281183).

Almost surely, 2^51848388 is an apocalyptic number.

It is an amenable number.

51848388 is an abundant number, since it is smaller than the sum of its proper divisors (79212906).

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

51848388 is a wasteful number, since it uses less digits than its factorization.

51848388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440243 (or 1440238 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 51848388 is about 7200.5824764390. The cubic root of 51848388 is about 372.8880103292. Note that the first 3 decimals are identical.

The spelling of 51848388 in words is "fifty-one million, eight hundred forty-eight thousand, three hundred eighty-eight".