215097151 has 2 divisors, whose sum is σ = 215097152. Its totient is φ = 215097150.

The previous prime is 215097143. The next prime is 215097167. The reversal of 215097151 is 151790512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215097151 - 2³ = 215097143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215097101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107548575 + 107548576.

It is an arithmetic number, because the mean of its divisors is an integer number (107548576).

Almost surely, 2^215097151 is an apocalyptic number.

215097151 is a deficient number, since it is larger than the sum of its proper divisors (1).

215097151 is an equidigital number, since it uses as much as digits as its factorization.

215097151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 215097151 is about 14666.1907460663. The cubic root of 215097151 is about 599.1628612448.

The spelling of 215097151 in words is "two hundred fifteen million, ninety-seven thousand, one hundred fifty-one".