150643021 has 4 divisors (see below), whose sum is σ = 154714492. Its totient is φ = 146571552.

The previous prime is 150643007. The next prime is 150643027. The reversal of 150643021 is 120346051.

150643021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 62188996 + 88454025 = 7886^2 + 9405^2 .

It is a cyclic number.

It is not a de Polignac number, because 150643021 - 2⁹ = 150642509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 150642983 and 150643001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150643027) 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, 2035680 + ... + 2035753.

It is an arithmetic number, because the mean of its divisors is an integer number (38678623).

Almost surely, 2^150643021 is an apocalyptic number.

It is an amenable number.

150643021 is a deficient number, since it is larger than the sum of its proper divisors (4071471).

150643021 is an equidigital number, since it uses as much as digits as its factorization.

150643021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071470.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 150643021 is about 12273.6718629756. The cubic root of 150643021 is about 532.0874375758.

Adding to 150643021 its reverse (120346051), we get a palindrome (270989072).

The spelling of 150643021 in words is "one hundred fifty million, six hundred forty-three thousand, twenty-one".