205541216 has 24 divisors (see below), whose sum is σ = 415598400. Its totient is φ = 99992448.

The previous prime is 205541201. The next prime is 205541243. The reversal of 205541216 is 612145502.

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, 85616 + ... + 87983.

It is an arithmetic number, because the mean of its divisors is an integer number (17316600).

Almost surely, 2^205541216 is an apocalyptic number.

It is an amenable number.

205541216 is an abundant number, since it is smaller than the sum of its proper divisors (210057184).

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

205541216 is a wasteful number, since it uses less digits than its factorization.

205541216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173646 (or 173638 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 205541216 is about 14336.7086878405. The cubic root of 205541216 is about 590.1552937955.

Adding to 205541216 its reverse (612145502), we get a palindrome (817686718).

The spelling of 205541216 in words is "two hundred five million, five hundred forty-one thousand, two hundred sixteen".