147382221 has 24 divisors (see below), whose sum is σ = 237036864. Its totient is φ = 79781760.

The previous prime is 147382217. The next prime is 147382237. The reversal of 147382221 is 122283741.

It is not a de Polignac number, because 147382221 - 2² = 147382217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147382421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2140 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (9876536).

Almost surely, 2^147382221 is an apocalyptic number.

It is an amenable number.

147382221 is a deficient number, since it is larger than the sum of its proper divisors (89654643).

147382221 is a wasteful number, since it uses less digits than its factorization.

147382221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489 (or 19470 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 147382221 is about 12140.1079484492. The cubic root of 147382221 is about 528.2202328223.

The spelling of 147382221 in words is "one hundred forty-seven million, three hundred eighty-two thousand, two hundred twenty-one".