215029147 has 2 divisors, whose sum is σ = 215029148. Its totient is φ = 215029146.

The previous prime is 215029123. The next prime is 215029159. The reversal of 215029147 is 741920512.

215029147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215029147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215029187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107514573 + 107514574.

It is an arithmetic number, because the mean of its divisors is an integer number (107514574).

Almost surely, 2^215029147 is an apocalyptic number.

215029147 is a deficient number, since it is larger than the sum of its proper divisors (1).

215029147 is an equidigital number, since it uses as much as digits as its factorization.

215029147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 215029147 is about 14663.8721693828. The cubic root of 215029147 is about 599.0997118481.

Adding to 215029147 its reverse (741920512), we get a palindrome (956949659).

The spelling of 215029147 in words is "two hundred fifteen million, twenty-nine thousand, one hundred forty-seven".