51171155 has 8 divisors (see below), whose sum is σ = 70177632. Its totient is φ = 35088768.

The previous prime is 51171149. The next prime is 51171179. The reversal of 51171155 is 55117115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51171155 - 2¹⁴ = 51154771 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730982 + ... + 731051.

It is an arithmetic number, because the mean of its divisors is an integer number (8772204).

Almost surely, 2^51171155 is an apocalyptic number.

51171155 is a deficient number, since it is larger than the sum of its proper divisors (19006477).

51171155 is a wasteful number, since it uses less digits than its factorization.

51171155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462045.

The product of its digits is 875, while the sum is 26.

The square root of 51171155 is about 7153.4016383816. The cubic root of 51171155 is about 371.2573609699.

The spelling of 51171155 in words is "fifty-one million, one hundred seventy-one thousand, one hundred fifty-five".