51345505 has 16 divisors (see below), whose sum is σ = 65445120. Its totient is φ = 38562048.

The previous prime is 51345487. The next prime is 51345521. The reversal of 51345505 is 50554315.

51345505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51345505 - 2⁵ = 51345473 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, 8344 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (4090320).

Almost surely, 2^51345505 is an apocalyptic number.

It is an amenable number.

51345505 is a deficient number, since it is larger than the sum of its proper divisors (14099615).

51345505 is a wasteful number, since it uses less digits than its factorization.

51345505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 51345505 is about 7165.5777854964. The cubic root of 51345505 is about 371.6785314862.

The spelling of 51345505 in words is "fifty-one million, three hundred forty-five thousand, five hundred five".