147354221 has 6 divisors (see below), whose sum is σ = 171412110. Its totient is φ = 126303576.

The previous prime is 147354217. The next prime is 147354241. The reversal of 147354221 is 122453741.

It can be written as a sum of positive squares in only one way, i.e., 121242121 + 26112100 = 11011^2 + 5110^2 .

It is not a de Polignac number, because 147354221 - 2² = 147354217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147354241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1503566 + ... + 1503663.

It is an arithmetic number, because the mean of its divisors is an integer number (28568685).

Almost surely, 2^147354221 is an apocalyptic number.

It is an amenable number.

147354221 is a deficient number, since it is larger than the sum of its proper divisors (24057889).

147354221 is an equidigital number, since it uses as much as digits as its factorization.

147354221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007243 (or 3007236 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 147354221 is about 12138.9546914057. The cubic root of 147354221 is about 528.1867798880.

The spelling of 147354221 in words is "one hundred forty-seven million, three hundred fifty-four thousand, two hundred twenty-one".