51605115 has 32 divisors (see below), whose sum is σ = 88050240. Its totient is φ = 25718784.

The previous prime is 51605063. The next prime is 51605131. The reversal of 51605115 is 51150615.

It is not a de Polignac number, because 51605115 - 2¹¹ = 51603067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39391 + ... + 40679.

It is an arithmetic number, because the mean of its divisors is an integer number (2751570).

Almost surely, 2^51605115 is an apocalyptic number.

51605115 is a deficient number, since it is larger than the sum of its proper divisors (36445125).

51605115 is a wasteful number, since it uses less digits than its factorization.

51605115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51605115 is about 7183.6700230453. The cubic root of 51605115 is about 372.3038981019.

The spelling of 51605115 in words is "fifty-one million, six hundred five thousand, one hundred fifteen".