216229157 has 2 divisors, whose sum is σ = 216229158. Its totient is φ = 216229156.

The previous prime is 216229129. The next prime is 216229207. The reversal of 216229157 is 751922612.

216229157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213568996 + 2660161 = 14614^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 216229157 - 2²² = 212034853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216229127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108114578 + 108114579.

It is an arithmetic number, because the mean of its divisors is an integer number (108114579).

Almost surely, 2^216229157 is an apocalyptic number.

It is an amenable number.

216229157 is a deficient number, since it is larger than the sum of its proper divisors (1).

216229157 is an equidigital number, since it uses as much as digits as its factorization.

216229157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 216229157 is about 14704.7324695147. The cubic root of 216229157 is about 600.2121074160.

The spelling of 216229157 in words is "two hundred sixteen million, two hundred twenty-nine thousand, one hundred fifty-seven".