51504473 has 2 divisors, whose sum is σ = 51504474. Its totient is φ = 51504472.

The previous prime is 51504461. The next prime is 51504503. The reversal of 51504473 is 37440515.

51504473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31326409 + 20178064 = 5597^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 51504473 - 2⁴ = 51504457 is a prime.

It is not a weakly prime, because it can be changed into another prime (51504443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752236 + 25752237.

It is an arithmetic number, because the mean of its divisors is an integer number (25752237).

Almost surely, 2^51504473 is an apocalyptic number.

It is an amenable number.

51504473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504473 is an equidigital number, since it uses as much as digits as its factorization.

51504473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 51504473 is about 7176.6616891142. The cubic root of 51504473 is about 372.0617141416.

Adding to 51504473 its reverse (37440515), we get a palindrome (88944988).

The spelling of 51504473 in words is "fifty-one million, five hundred four thousand, four hundred seventy-three".