51302016 has 48 divisors (see below), whose sum is σ = 147630210. Its totient is φ = 17100288.

The previous prime is 51302011. The next prime is 51302023. The reversal of 51302016 is 61020315.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 9000000 = 6504^2 + 3000^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 51302016.

It is not an unprimeable number, because it can be changed into a prime (51302011) 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, 21115 + ... + 23418.

Almost surely, 2^51302016 is an apocalyptic number.

It is an amenable number.

51302016 is an abundant number, since it is smaller than the sum of its proper divisors (96328194).

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

51302016 is a wasteful number, since it uses less digits than its factorization.

51302016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44553 (or 44538 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51302016 is about 7162.5425653185. The cubic root of 51302016 is about 371.5735661580.

The spelling of 51302016 in words is "fifty-one million, three hundred two thousand, sixteen".