217489054 has 8 divisors (see below), whose sum is σ = 330363360. Its totient is φ = 107367936.

The previous prime is 217489039. The next prime is 217489061. The reversal of 217489054 is 450984712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 217488998 and 217489016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688099 + ... + 688414.

It is an arithmetic number, because the mean of its divisors is an integer number (41295420).

Almost surely, 2^217489054 is an apocalyptic number.

217489054 is a deficient number, since it is larger than the sum of its proper divisors (112874306).

217489054 is a wasteful number, since it uses less digits than its factorization.

217489054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376594.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 217489054 is about 14747.5100949279. The cubic root of 217489054 is about 601.3755975127.

The spelling of 217489054 in words is "two hundred seventeen million, four hundred eighty-nine thousand, fifty-four".