150215321 has 2 divisors, whose sum is σ = 150215322. Its totient is φ = 150215320.

The previous prime is 150215287. The next prime is 150215327. The reversal of 150215321 is 123512051.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77352025 + 72863296 = 8795^2 + 8536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150215321 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 150215293 and 150215302.

It is not a weakly prime, because it can be changed into another prime (150215327) 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, 75107660 + 75107661.

It is an arithmetic number, because the mean of its divisors is an integer number (75107661).

Almost surely, 2^150215321 is an apocalyptic number.

It is an amenable number.

150215321 is a deficient number, since it is larger than the sum of its proper divisors (1).

150215321 is an equidigital number, since it uses as much as digits as its factorization.

150215321 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 20.

The square root of 150215321 is about 12256.2360045815. The cubic root of 150215321 is about 531.5833993781.

Adding to 150215321 its reverse (123512051), we get a palindrome (273727372).

The spelling of 150215321 in words is "one hundred fifty million, two hundred fifteen thousand, three hundred twenty-one".