215096491 has 2 divisors, whose sum is σ = 215096492. Its totient is φ = 215096490.

The previous prime is 215096489. The next prime is 215096521. The reversal of 215096491 is 194690512.

215096491 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 is a cyclic number.

It is not a de Polignac number, because 215096491 - 2¹ = 215096489 is a prime.

Together with 215096489, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215096491.

It is not a weakly prime, because it can be changed into another prime (215096591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107548245 + 107548246.

It is an arithmetic number, because the mean of its divisors is an integer number (107548246).

Almost surely, 2^215096491 is an apocalyptic number.

215096491 is a deficient number, since it is larger than the sum of its proper divisors (1).

215096491 is an equidigital number, since it uses as much as digits as its factorization.

215096491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 215096491 is about 14666.1682453189. The cubic root of 215096491 is about 599.1622484242.

The spelling of 215096491 in words is "two hundred fifteen million, ninety-six thousand, four hundred ninety-one".