216612054 has 24 divisors (see below), whose sum is σ = 475939152. Its totient is φ = 71186640.

The previous prime is 216612047. The next prime is 216612083. The reversal of 216612054 is 450216612.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83469 + ... + 86024.

It is an arithmetic number, because the mean of its divisors is an integer number (19830798).

Almost surely, 2^216612054 is an apocalyptic number.

216612054 is an abundant number, since it is smaller than the sum of its proper divisors (259327098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216612054 is a wasteful number, since it uses less digits than its factorization.

216612054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169572 (or 169569 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 216612054 is about 14717.7462269194. The cubic root of 216612054 is about 600.5661822281.

Adding to 216612054 its reverse (450216612), we get a palindrome (666828666).

The spelling of 216612054 in words is "two hundred sixteen million, six hundred twelve thousand, fifty-four".