216552454 has 12 divisors (see below), whose sum is σ = 336418524. Its totient is φ = 104541752.

The previous prime is 216552451. The next prime is 216552461. The reversal of 216552454 is 454255612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216552451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62692 + ... + 66055.

It is an arithmetic number, because the mean of its divisors is an integer number (28034877).

Almost surely, 2^216552454 is an apocalyptic number.

216552454 is a deficient number, since it is larger than the sum of its proper divisors (119866070).

216552454 is a wasteful number, since it uses less digits than its factorization.

216552454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128807 (or 128778 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 216552454 is about 14715.7213210906. The cubic root of 216552454 is about 600.5110959927.

The spelling of 216552454 in words is "two hundred sixteen million, five hundred fifty-two thousand, four hundred fifty-four".