150530021 has 2 divisors, whose sum is σ = 150530022. Its totient is φ = 150530020.

The previous prime is 150529991. The next prime is 150530041. The reversal of 150530021 is 120035051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112572100 + 37957921 = 10610^2 + 6161^2 .

It is a cyclic number.

It is not a de Polignac number, because 150530021 - 2⁶ = 150529957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150530041) 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, 75265010 + 75265011.

It is an arithmetic number, because the mean of its divisors is an integer number (75265011).

Almost surely, 2^150530021 is an apocalyptic number.

It is an amenable number.

150530021 is a deficient number, since it is larger than the sum of its proper divisors (1).

150530021 is an equidigital number, since it uses as much as digits as its factorization.

150530021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 150530021 is about 12269.0676499887. The cubic root of 150530021 is about 531.9543615569.

Adding to 150530021 its reverse (120035051), we get a palindrome (270565072).

The spelling of 150530021 in words is "one hundred fifty million, five hundred thirty thousand, twenty-one".