51228472 has 16 divisors (see below), whose sum is σ = 96667560. Its totient is φ = 25450464.

The previous prime is 51228469. The next prime is 51228481. The reversal of 51228472 is 27482215.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19138 + ... + 21649.

Almost surely, 2^51228472 is an apocalyptic number.

It is an amenable number.

51228472 is a deficient number, since it is larger than the sum of its proper divisors (45439088).

51228472 is a wasteful number, since it uses less digits than its factorization.

51228472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40950 (or 40946 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 51228472 is about 7157.4067929663. The cubic root of 51228472 is about 371.3959248286.

The spelling of 51228472 in words is "fifty-one million, two hundred twenty-eight thousand, four hundred seventy-two".