216154445 has 16 divisors (see below), whose sum is σ = 281957760. Its totient is φ = 158124864.

The previous prime is 216154427. The next prime is 216154447. The reversal of 216154445 is 544451612.

It is a cyclic number.

It is not a de Polignac number, because 216154445 - 2⁸ = 216154189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216154447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8585 + ... + 22494.

It is an arithmetic number, because the mean of its divisors is an integer number (17622360).

Almost surely, 2^216154445 is an apocalyptic number.

It is an amenable number.

216154445 is a deficient number, since it is larger than the sum of its proper divisors (65803315).

216154445 is a wasteful number, since it uses less digits than its factorization.

216154445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31204.

The product of its digits is 19200, while the sum is 32.

The square root of 216154445 is about 14702.1918433953. The cubic root of 216154445 is about 600.1429705593.

The spelling of 216154445 in words is "two hundred sixteen million, one hundred fifty-four thousand, four hundred forty-five".