150323021 has 4 divisors (see below), whose sum is σ = 150427932. Its totient is φ = 150218112.

The previous prime is 150323011. The next prime is 150323023. The reversal of 150323021 is 120323051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106894921 + 43428100 = 10339^2 + 6590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150323021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150323023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50276 + ... + 53181.

It is an arithmetic number, because the mean of its divisors is an integer number (37606983).

Almost surely, 2^150323021 is an apocalyptic number.

It is an amenable number.

150323021 is a deficient number, since it is larger than the sum of its proper divisors (104911).

150323021 is a wasteful number, since it uses less digits than its factorization.

150323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104910.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 150323021 is about 12260.6288990410. The cubic root of 150323021 is about 531.7104122878.

Adding to 150323021 its reverse (120323051), we get a palindrome (270646072).

The spelling of 150323021 in words is "one hundred fifty million, three hundred twenty-three thousand, twenty-one".