51355115 has 16 divisors (see below), whose sum is σ = 72069888. Its totient is φ = 34394976.

The previous prime is 51355097. The next prime is 51355151. The reversal of 51355115 is 51155315.

It is not a de Polignac number, because 51355115 - 2¹⁰ = 51354091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15557 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (4504368).

Almost surely, 2^51355115 is an apocalyptic number.

51355115 is a deficient number, since it is larger than the sum of its proper divisors (20714773).

51355115 is a wasteful number, since it uses less digits than its factorization.

51355115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34178.

The product of its digits is 1875, while the sum is 26.

The square root of 51355115 is about 7166.2483211231. The cubic root of 51355115 is about 371.7017182472.

The spelling of 51355115 in words is "fifty-one million, three hundred fifty-five thousand, one hundred fifteen".