51480804 has 96 divisors (see below), whose sum is σ = 133056000. Its totient is φ = 15434496.

The previous prime is 51480799. The next prime is 51480817. The reversal of 51480804 is 40808415.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578392 + ... + 578480.

It is an arithmetic number, because the mean of its divisors is an integer number (1386000).

Almost surely, 2^51480804 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 51480804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66528000).

51480804 is an abundant number, since it is smaller than the sum of its proper divisors (81575196).

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

51480804 is a wasteful number, since it uses less digits than its factorization.

51480804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 51480804 is about 7175.0124738568. The cubic root of 51480804 is about 372.0047114677.

It can be divided in two parts, 514 and 80804, that added together give a palindrome (81318).

The spelling of 51480804 in words is "fifty-one million, four hundred eighty thousand, eight hundred four".