216010057 has 2 divisors, whose sum is σ = 216010058. Its totient is φ = 216010056.

The previous prime is 216010021. The next prime is 216010061. The reversal of 216010057 is 750010612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111070521 + 104939536 = 10539^2 + 10244^2 .

It is a cyclic number.

It is not a de Polignac number, because 216010057 - 2²⁷ = 81792329 is a prime.

It is not a weakly prime, because it can be changed into another prime (216010087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108005028 + 108005029.

It is an arithmetic number, because the mean of its divisors is an integer number (108005029).

Almost surely, 2^216010057 is an apocalyptic number.

It is an amenable number.

216010057 is a deficient number, since it is larger than the sum of its proper divisors (1).

216010057 is an equidigital number, since it uses as much as digits as its factorization.

216010057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 216010057 is about 14697.2805988047. The cubic root of 216010057 is about 600.0093118925.

Adding to 216010057 its reverse (750010612), we get a palindrome (966020669).

The spelling of 216010057 in words is "two hundred sixteen million, ten thousand, fifty-seven".