216570054 has 16 divisors (see below), whose sum is σ = 433791792. Its totient is φ = 72081408.

The previous prime is 216570043. The next prime is 216570083. The reversal of 216570054 is 450075612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22779 + ... + 30854.

It is an arithmetic number, because the mean of its divisors is an integer number (27111987).

Almost surely, 2^216570054 is an apocalyptic number.

216570054 is an abundant number, since it is smaller than the sum of its proper divisors (217221738).

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

216570054 is a wasteful number, since it uses less digits than its factorization.

216570054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54311.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 216570054 is about 14716.3193088489. The cubic root of 216570054 is about 600.5273641204.

The spelling of 216570054 in words is "two hundred sixteen million, five hundred seventy thousand, fifty-four".