51680304 has 120 divisors (see below), whose sum is σ = 164069360. Its totient is φ = 15054336.

The previous prime is 51680303. The next prime is 51680309. The reversal of 51680304 is 40308615.

It is not an unprimeable number, because it can be changed into a prime (51680303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34842 + ... + 36294.

Almost surely, 2^51680304 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 51680304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82034680).

51680304 is an abundant number, since it is smaller than the sum of its proper divisors (112389056).

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

51680304 is a wasteful number, since it uses less digits than its factorization.

51680304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51680304 is about 7188.9014459791. The cubic root of 51680304 is about 372.4846267847.

Adding to 51680304 its reverse (40308615), we get a palindrome (91988919).

It can be divided in two parts, 51680 and 304, that added together give a square (51984 = 228²).

The spelling of 51680304 in words is "fifty-one million, six hundred eighty thousand, three hundred four".