150305021 has 2 divisors, whose sum is σ = 150305022. Its totient is φ = 150305020.

The previous prime is 150305017. The next prime is 150305039. The reversal of 150305021 is 120503051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130279396 + 20025625 = 11414^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 150305021 - 2² = 150305017 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 (150305821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75152510 + 75152511.

It is an arithmetic number, because the mean of its divisors is an integer number (75152511).

Almost surely, 2^150305021 is an apocalyptic number.

It is an amenable number.

150305021 is a deficient number, since it is larger than the sum of its proper divisors (1).

150305021 is an equidigital number, since it uses as much as digits as its factorization.

150305021 is an evil number, because the sum of its binary digits is even.

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

The square root of 150305021 is about 12259.8948201035. The cubic root of 150305021 is about 531.6891887268.

Adding to 150305021 its reverse (120503051), we get a palindrome (270808072).

The spelling of 150305021 in words is "one hundred fifty million, three hundred five thousand, twenty-one".