51365473 has 2 divisors, whose sum is σ = 51365474. Its totient is φ = 51365472.

The previous prime is 51365443. The next prime is 51365513. The reversal of 51365473 is 37456315.

51365473 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., 51151104 + 214369 = 7152^2 + 463^2 .

It is a cyclic number.

It is not a de Polignac number, because 51365473 - 2¹³ = 51357281 is a prime.

It is not a weakly prime, because it can be changed into another prime (51365423) 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, 25682736 + 25682737.

It is an arithmetic number, because the mean of its divisors is an integer number (25682737).

Almost surely, 2^51365473 is an apocalyptic number.

It is an amenable number.

51365473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51365473 is an equidigital number, since it uses as much as digits as its factorization.

51365473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 51365473 is about 7166.9709780353. The cubic root of 51365473 is about 371.7267065247.

It can be divided in two parts, 5136 and 5473, that added together give a square (10609 = 103²).

The spelling of 51365473 in words is "fifty-one million, three hundred sixty-five thousand, four hundred seventy-three".