216045057 has 8 divisors (see below), whose sum is σ = 288573984. Its totient is φ = 143773088.

The previous prime is 216045047. The next prime is 216045073. The reversal of 216045057 is 750540612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216045057 - 2¹⁸ = 215782913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216045047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62268 + ... + 65645.

It is an arithmetic number, because the mean of its divisors is an integer number (36071748).

Almost surely, 2^216045057 is an apocalyptic number.

It is an amenable number.

216045057 is a deficient number, since it is larger than the sum of its proper divisors (72528927).

216045057 is a wasteful number, since it uses less digits than its factorization.

216045057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128479.

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

The square root of 216045057 is about 14698.4712470379. The cubic root of 216045057 is about 600.0417165439.

Adding to 216045057 its reverse (750540612), we get a palindrome (966585669).

The spelling of 216045057 in words is "two hundred sixteen million, forty-five thousand, fifty-seven".