51504180 has 96 divisors (see below), whose sum is σ = 177510144. Its totient is φ = 10865664.

The previous prime is 51504179. The next prime is 51504197. The reversal of 51504180 is 8140515.

It is a self number, because there is not a number n which added to its sum of digits gives 51504180.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 744 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (1849064).

Almost surely, 2^51504180 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 51504180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88755072).

51504180 is an abundant number, since it is smaller than the sum of its proper divisors (126005964).

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

51504180 is a wasteful number, since it uses less digits than its factorization.

51504180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9465 (or 9463 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 51504180 is about 7176.6412756944. The cubic root of 51504180 is about 372.0610086088.

Adding to 51504180 its reverse (8140515), we get a palindrome (59644695).

The spelling of 51504180 in words is "fifty-one million, five hundred four thousand, one hundred eighty".