51472738 has 16 divisors (see below), whose sum is σ = 80972280. Its totient is φ = 24506496.

The previous prime is 51472727. The next prime is 51472739. The reversal of 51472738 is 83727415.

It can be written as a sum of positive squares in 4 ways, for example, as 33605209 + 17867529 = 5797^2 + 4227^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51472697 and 51472706.

It is not an unprimeable number, because it can be changed into a prime (51472739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845 + ... + 10312.

Almost surely, 2^51472738 is an apocalyptic number.

51472738 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51472738 is a deficient number, since it is larger than the sum of its proper divisors (29499542).

51472738 is a wasteful number, since it uses less digits than its factorization.

51472738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12261.

The product of its digits is 47040, while the sum is 37.

The square root of 51472738 is about 7174.4503622229. The cubic root of 51472738 is about 371.9852819166.

The spelling of 51472738 in words is "fifty-one million, four hundred seventy-two thousand, seven hundred thirty-eight".