217474054 has 12 divisors (see below), whose sum is σ = 379470204. Its totient is φ = 93203124.

The previous prime is 217474051. The next prime is 217474063. The reversal of 217474054 is 450474712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217474051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1109464 + ... + 1109659.

It is an arithmetic number, because the mean of its divisors is an integer number (31622517).

Almost surely, 2^217474054 is an apocalyptic number.

217474054 is a deficient number, since it is larger than the sum of its proper divisors (161996150).

217474054 is a wasteful number, since it uses less digits than its factorization.

217474054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219139 (or 2219132 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 217474054 is about 14747.0015257340. The cubic root of 217474054 is about 601.3617717726.

The spelling of 217474054 in words is "two hundred seventeen million, four hundred seventy-four thousand, fifty-four".