150221643 has 32 divisors (see below), whose sum is σ = 237710592. Its totient is φ = 83184000.

The previous prime is 150221623. The next prime is 150221681. The reversal of 150221643 is 346122051.

150221643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 150221643 - 2⁸ = 150221387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (150221623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41596 + ... + 45062.

It is an arithmetic number, because the mean of its divisors is an integer number (7428456).

Almost surely, 2^150221643 is an apocalyptic number.

150221643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

150221643 is a deficient number, since it is larger than the sum of its proper divisors (87488949).

150221643 is a wasteful number, since it uses less digits than its factorization.

150221643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 150221643 is about 12256.4939113924. The cubic root of 150221643 is about 531.5908567247.

Adding to 150221643 its reverse (346122051), we get a palindrome (496343694).

The spelling of 150221643 in words is "one hundred fifty million, two hundred twenty-one thousand, six hundred forty-three".