51455473 has 2 divisors, whose sum is σ = 51455474. Its totient is φ = 51455472.

The previous prime is 51455441. The next prime is 51455479. The reversal of 51455473 is 37455415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27952369 + 23503104 = 5287^2 + 4848^2 .

It is a cyclic number.

It is not a de Polignac number, because 51455473 - 2⁵ = 51455441 is a prime.

It is not a weakly prime, because it can be changed into another prime (51455479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25727736 + 25727737.

It is an arithmetic number, because the mean of its divisors is an integer number (25727737).

Almost surely, 2^51455473 is an apocalyptic number.

It is an amenable number.

51455473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51455473 is an equidigital number, since it uses as much as digits as its factorization.

51455473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 34.

The square root of 51455473 is about 7173.2470332479. The cubic root of 51455473 is about 371.9436867970.

The spelling of 51455473 in words is "fifty-one million, four hundred fifty-five thousand, four hundred seventy-three".