215302051 has 2 divisors, whose sum is σ = 215302052. Its totient is φ = 215302050.

The previous prime is 215301997. The next prime is 215302063. The reversal of 215302051 is 150203512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215302051 - 2²⁵ = 181747619 is a prime.

It is not a weakly prime, because it can be changed into another prime (215302751) 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, 107651025 + 107651026.

It is an arithmetic number, because the mean of its divisors is an integer number (107651026).

Almost surely, 2^215302051 is an apocalyptic number.

215302051 is a deficient number, since it is larger than the sum of its proper divisors (1).

215302051 is an equidigital number, since it uses as much as digits as its factorization.

215302051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 215302051 is about 14673.1745372295. The cubic root of 215302051 is about 599.3530536106.

Adding to 215302051 its reverse (150203512), we get a palindrome (365505563).

The spelling of 215302051 in words is "two hundred fifteen million, three hundred two thousand, fifty-one".