216317552 has 20 divisors (see below), whose sum is σ = 457217016. Its totient is φ = 98326080.

The previous prime is 216317533. The next prime is 216317567. The reversal of 216317552 is 255713612.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 614363 + ... + 614714.

Almost surely, 2^216317552 is an apocalyptic number.

216317552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216317552 is an abundant number, since it is smaller than the sum of its proper divisors (240899464).

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

216317552 is a wasteful number, since it uses less digits than its factorization.

216317552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229096 (or 1229090 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The square root of 216317552 is about 14707.7378274159. The cubic root of 216317552 is about 600.2938856582.

The spelling of 216317552 in words is "two hundred sixteen million, three hundred seventeen thousand, five hundred fifty-two".