215158051 has 2 divisors, whose sum is σ = 215158052. Its totient is φ = 215158050.

The previous prime is 215158049. The next prime is 215158063. The reversal of 215158051 is 150851512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215158051 - 2¹ = 215158049 is a prime.

Together with 215158049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (215158351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107579025 + 107579026.

It is an arithmetic number, because the mean of its divisors is an integer number (107579026).

Almost surely, 2^215158051 is an apocalyptic number.

215158051 is a deficient number, since it is larger than the sum of its proper divisors (1).

215158051 is an equidigital number, since it uses as much as digits as its factorization.

215158051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 215158051 is about 14668.2668028639. The cubic root of 215158051 is about 599.2194024789.

The spelling of 215158051 in words is "two hundred fifteen million, one hundred fifty-eight thousand, fifty-one".