216246157 has 2 divisors, whose sum is σ = 216246158. Its totient is φ = 216246156.

The previous prime is 216246133. The next prime is 216246193. The reversal of 216246157 is 751642612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 53275401 = 12766^2 + 7299^2 .

It is a cyclic number.

It is not a de Polignac number, because 216246157 - 2⁷ = 216246029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216246257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108123078 + 108123079.

It is an arithmetic number, because the mean of its divisors is an integer number (108123079).

Almost surely, 2^216246157 is an apocalyptic number.

It is an amenable number.

216246157 is a deficient number, since it is larger than the sum of its proper divisors (1).

216246157 is an equidigital number, since it uses as much as digits as its factorization.

216246157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 216246157 is about 14705.3105033522. The cubic root of 216246157 is about 600.2278366213.

Adding to 216246157 its reverse (751642612), we get a palindrome (967888769).

The spelling of 216246157 in words is "two hundred sixteen million, two hundred forty-six thousand, one hundred fifty-seven".