216054955 has 12 divisors (see below), whose sum is σ = 275415840. Its totient is φ = 162675584.

The previous prime is 216054931. The next prime is 216054997. The reversal of 216054955 is 559450612.

It is not a de Polignac number, because 216054955 - 2⁷ = 216054827 is a prime.

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, 73315 + ... + 76204.

It is an arithmetic number, because the mean of its divisors is an integer number (22951320).

Almost surely, 2^216054955 is an apocalyptic number.

216054955 is a deficient number, since it is larger than the sum of its proper divisors (59360885).

216054955 is a wasteful number, since it uses less digits than its factorization.

216054955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149558 (or 149541 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 216054955 is about 14698.8079448641. The cubic root of 216054955 is about 600.0508799445.

The spelling of 216054955 in words is "two hundred sixteen million, fifty-four thousand, nine hundred fifty-five".