54216191 has 8 divisors (see below), whose sum is σ = 55357344. Its totient is φ = 53079520.

The previous prime is 54216187. The next prime is 54216203. The reversal of 54216191 is 19161245.

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 54216191 - 2² = 54216187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54216691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35126 + ... + 36636.

It is an arithmetic number, because the mean of its divisors is an integer number (6919668).

Almost surely, 2^54216191 is an apocalyptic number.

54216191 is a deficient number, since it is larger than the sum of its proper divisors (1141153).

54216191 is a wasteful number, since it uses less digits than its factorization.

54216191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241.

The product of its digits is 2160, while the sum is 29.

The square root of 54216191 is about 7363.1644691668. The cubic root of 54216191 is about 378.4800573736.

The spelling of 54216191 in words is "fifty-four million, two hundred sixteen thousand, one hundred ninety-one".