54666217 has 4 divisors (see below), whose sum is σ = 55829376. Its totient is φ = 53503060.

The previous prime is 54666191. The next prime is 54666221. The reversal of 54666217 is 71266645.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71266645 = 5 ⋅14253329.

It is a cyclic number.

It is not a de Polignac number, because 54666217 - 2⁷ = 54666089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54666257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581509 + ... + 581602.

It is an arithmetic number, because the mean of its divisors is an integer number (13957344).

Almost surely, 2^54666217 is an apocalyptic number.

It is an amenable number.

54666217 is a deficient number, since it is larger than the sum of its proper divisors (1163159).

54666217 is a wasteful number, since it uses less digits than its factorization.

54666217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163158.

The product of its digits is 60480, while the sum is 37.

The square root of 54666217 is about 7393.6605954020. The cubic root of 54666217 is about 379.5243749254.

The spelling of 54666217 in words is "fifty-four million, six hundred sixty-six thousand, two hundred seventeen".