217265054 has 8 divisors (see below), whose sum is σ = 330761928. Its totient is φ = 107011080.

The previous prime is 217265029. The next prime is 217265077. The reversal of 217265054 is 450562712.

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

It is a self number, because there is not a number n which added to its sum of digits gives 217265054.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810557 + ... + 810824.

It is an arithmetic number, because the mean of its divisors is an integer number (41345241).

Almost surely, 2^217265054 is an apocalyptic number.

217265054 is a deficient number, since it is larger than the sum of its proper divisors (113496874).

217265054 is a wasteful number, since it uses less digits than its factorization.

217265054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621450.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 217265054 is about 14739.9136361106. The cubic root of 217265054 is about 601.1690669543.

The spelling of 217265054 in words is "two hundred seventeen million, two hundred sixty-five thousand, fifty-four".