51463968 has 48 divisors (see below), whose sum is σ = 139458816. Its totient is φ = 16600320.

The previous prime is 51463963. The next prime is 51464011. The reversal of 51463968 is 86936415.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (51463961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5671 + ... + 11622.

It is an arithmetic number, because the mean of its divisors is an integer number (2905392).

Almost surely, 2^51463968 is an apocalyptic number.

It is an amenable number.

51463968 is an abundant number, since it is smaller than the sum of its proper divisors (87994848).

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

51463968 is a wasteful number, since it uses less digits than its factorization.

51463968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17337 (or 17329 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 51463968 is about 7173.8391395403. The cubic root of 51463968 is about 371.9641542521.

The spelling of 51463968 in words is "fifty-one million, four hundred sixty-three thousand, nine hundred sixty-eight".