54243217 has 16 divisors (see below), whose sum is σ = 64143360. Its totient is φ = 44907408.

The previous prime is 54243197. The next prime is 54243227. The reversal of 54243217 is 71234245.

It is a de Polignac number, because none of the positive numbers 2^k-54243217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54243227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24948 + ... + 27034.

It is an arithmetic number, because the mean of its divisors is an integer number (4008960).

Almost surely, 2^54243217 is an apocalyptic number.

It is an amenable number.

54243217 is a deficient number, since it is larger than the sum of its proper divisors (9900143).

54243217 is a wasteful number, since it uses less digits than its factorization.

54243217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220.

The product of its digits is 6720, while the sum is 28.

The square root of 54243217 is about 7364.9994568907. Note that the first 3 decimals coincide. The cubic root of 54243217 is about 378.5429359017.

The spelling of 54243217 in words is "fifty-four million, two hundred forty-three thousand, two hundred seventeen".