216542053 has 16 divisors (see below), whose sum is σ = 268128000. Its totient is φ = 170292096.

The previous prime is 216541981. The next prime is 216542089. The reversal of 216542053 is 350245612.

216542053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-216542053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216548053) 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, 8073 + ... + 22321.

It is an arithmetic number, because the mean of its divisors is an integer number (16758000).

Almost surely, 2^216542053 is an apocalyptic number.

It is an amenable number.

216542053 is a deficient number, since it is larger than the sum of its proper divisors (51585947).

216542053 is a wasteful number, since it uses less digits than its factorization.

216542053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14436.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 216542053 is about 14715.3679192876. The cubic root of 216542053 is about 600.5014816694.

Adding to 216542053 its reverse (350245612), we get a palindrome (566787665).

The spelling of 216542053 in words is "two hundred sixteen million, five hundred forty-two thousand, fifty-three".