52171155 has 32 divisors (see below), whose sum is σ = 94072320. Its totient is φ = 27427680.

The previous prime is 52171151. The next prime is 52171157. The reversal of 52171155 is 55117125.

It is not a de Polignac number, because 52171155 - 2² = 52171151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (52171151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6864 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (2939760).

Almost surely, 2^52171155 is an apocalyptic number.

52171155 is a deficient number, since it is larger than the sum of its proper divisors (41901165).

52171155 is a wasteful number, since it uses less digits than its factorization.

52171155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528 (or 5522 counting only the distinct ones).

The product of its digits is 1750, while the sum is 27.

The square root of 52171155 is about 7222.9602657082. The cubic root of 52171155 is about 373.6601787115.

It can be divided in two parts, 52171 and 155, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 52171155 in words is "fifty-two million, one hundred seventy-one thousand, one hundred fifty-five".