51808482 has 48 divisors (see below), whose sum is σ = 123091488. Its totient is φ = 15618240.

The previous prime is 51808457. The next prime is 51808499. The reversal of 51808482 is 28480815.

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 23 ways as a sum of consecutive naturals, for example, 45573 + ... + 46695.

It is an arithmetic number, because the mean of its divisors is an integer number (2564406).

Almost surely, 2^51808482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51808482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61545744).

51808482 is an abundant number, since it is smaller than the sum of its proper divisors (71283006).

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

51808482 is a wasteful number, since it uses less digits than its factorization.

51808482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 51808482 is about 7197.8109172164. The cubic root of 51808482 is about 372.7923192266.

The spelling of 51808482 in words is "fifty-one million, eight hundred eight thousand, four hundred eighty-two".