51905115 has 24 divisors (see below), whose sum is σ = 90138048. Its totient is φ = 27630720.

The previous prime is 51905069. The next prime is 51905123. The reversal of 51905115 is 51150915.

It is not a de Polignac number, because 51905115 - 2¹⁰ = 51904091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41550 + ... + 42780.

It is an arithmetic number, because the mean of its divisors is an integer number (3755752).

Almost surely, 2^51905115 is an apocalyptic number.

51905115 is a deficient number, since it is larger than the sum of its proper divisors (38232933).

51905115 is a wasteful number, since it uses less digits than its factorization.

51905115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 51905115 is about 7204.5204559360. The cubic root of 51905115 is about 373.0239522506.

The spelling of 51905115 in words is "fifty-one million, nine hundred five thousand, one hundred fifteen".