53181171 has 32 divisors (see below), whose sum is σ = 84000000. Its totient is φ = 33156864.

The previous prime is 53181169. The next prime is 53181181. The reversal of 53181171 is 17118135.

It is not a de Polignac number, because 53181171 - 2¹ = 53181169 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53181131) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 41955 + ... + 43203.

It is an arithmetic number, because the mean of its divisors is an integer number (2625000).

Almost surely, 2^53181171 is an apocalyptic number.

53181171 is a deficient number, since it is larger than the sum of its proper divisors (30818829).

53181171 is a wasteful number, since it uses less digits than its factorization.

53181171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1354 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 53181171 is about 7292.5421493468. The cubic root of 53181171 is about 376.0560949770.

The spelling of 53181171 in words is "fifty-three million, one hundred eighty-one thousand, one hundred seventy-one".