216346054 has 4 divisors (see below), whose sum is σ = 324519084. Its totient is φ = 108173026.

The previous prime is 216346051. The next prime is 216346069. The reversal of 216346054 is 450643612.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216346051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54086512 + ... + 54086515.

It is an arithmetic number, because the mean of its divisors is an integer number (81129771).

Almost surely, 2^216346054 is an apocalyptic number.

216346054 is a deficient number, since it is larger than the sum of its proper divisors (108173030).

216346054 is a wasteful number, since it uses less digits than its factorization.

216346054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108173029.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 216346054 is about 14708.7067412468. The cubic root of 216346054 is about 600.3202494072.

Adding to 216346054 its reverse (450643612), we get a palindrome (666989666).

The spelling of 216346054 in words is "two hundred sixteen million, three hundred forty-six thousand, fifty-four".