51478512 has 40 divisors (see below), whose sum is σ = 134979456. Its totient is φ = 16902336.

The previous prime is 51478501. The next prime is 51478519. The reversal of 51478512 is 21587415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51478519) 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, 4788 + ... + 11219.

Almost surely, 2^51478512 is an apocalyptic number.

It is an amenable number.

51478512 is an abundant number, since it is smaller than the sum of its proper divisors (83500944).

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

51478512 is a wasteful number, since it uses less digits than its factorization.

51478512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16085 (or 16079 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 51478512 is about 7174.8527511023. The cubic root of 51478512 is about 371.9991906561. Note that the first 3 decimals are identical.

The spelling of 51478512 in words is "fifty-one million, four hundred seventy-eight thousand, five hundred twelve".