150221500 has 144 divisors (see below), whose sum is σ = 390394368. Its totient is φ = 50160000.

The previous prime is 150221431. The next prime is 150221501. The reversal of 150221500 is 5122051.

150221500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150221501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 786405 + ... + 786595.

It is an arithmetic number, because the mean of its divisors is an integer number (2711072).

Almost surely, 2^150221500 is an apocalyptic number.

150221500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 150221500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195197184).

150221500 is an abundant number, since it is smaller than the sum of its proper divisors (240172868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

150221500 is a wasteful number, since it uses less digits than its factorization.

150221500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 150221500 is about 12256.4880777489. The cubic root of 150221500 is about 531.5906880461.

Adding to 150221500 its reverse (5122051), we get a palindrome (155343551).

The spelling of 150221500 in words is "one hundred fifty million, two hundred twenty-one thousand, five hundred".