54215171 has 2 divisors, whose sum is σ = 54215172. Its totient is φ = 54215170.

The previous prime is 54215167. The next prime is 54215179. The reversal of 54215171 is 17151245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54215171 - 2² = 54215167 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54215171.

It is not a weakly prime, because it can be changed into another prime (54215179) 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 as a sum of consecutive naturals, namely, 27107585 + 27107586.

It is an arithmetic number, because the mean of its divisors is an integer number (27107586).

Almost surely, 2^54215171 is an apocalyptic number.

54215171 is a deficient number, since it is larger than the sum of its proper divisors (1).

54215171 is an equidigital number, since it uses as much as digits as its factorization.

54215171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 26.

The square root of 54215171 is about 7363.0952051430. The cubic root of 54215171 is about 378.4776838386.

The spelling of 54215171 in words is "fifty-four million, two hundred fifteen thousand, one hundred seventy-one".