51363680 has 48 divisors (see below), whose sum is σ = 122744160. Its totient is φ = 20308992.

The previous prime is 51363677. The next prime is 51363721. The reversal of 51363680 is 8636315.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12437 + ... + 16043.

It is an arithmetic number, because the mean of its divisors is an integer number (2557170).

Almost surely, 2^51363680 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 51363680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61372080).

51363680 is an abundant number, since it is smaller than the sum of its proper divisors (71380480).

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

51363680 is a wasteful number, since it uses less digits than its factorization.

51363680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711 (or 3703 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 51363680 is about 7166.8458892319. The cubic root of 51363680 is about 371.7223812214.

Adding to 51363680 its reverse (8636315), we get a palindrome (59999995).

The spelling of 51363680 in words is "fifty-one million, three hundred sixty-three thousand, six hundred eighty".