51480505 has 16 divisors (see below), whose sum is σ = 67182480. Its totient is φ = 37711872.

The previous prime is 51480497. The next prime is 51480521. The reversal of 51480505 is 50508415.

51480505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2214144 + 49266361 = 1488^2 + 7019^2 .

It is a cyclic number.

It is not a de Polignac number, because 51480505 - 2³ = 51480497 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5040 + ... + 11329.

It is an arithmetic number, because the mean of its divisors is an integer number (4198905).

Almost surely, 2^51480505 is an apocalyptic number.

It is an amenable number.

51480505 is a deficient number, since it is larger than the sum of its proper divisors (15701975).

51480505 is a wasteful number, since it uses less digits than its factorization.

51480505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16428.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 51480505 is about 7174.9916376258. The cubic root of 51480505 is about 372.0039912664.

The spelling of 51480505 in words is "fifty-one million, four hundred eighty thousand, five hundred five".