145533223 has 16 divisors (see below), whose sum is σ = 165900960. Its totient is φ = 126448000.

The previous prime is 145533221. The next prime is 145533229. The reversal of 145533223 is 322335541.

It is a cyclic number.

It is not a de Polignac number, because 145533223 - 2¹ = 145533221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145533191 and 145533200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145533221) 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 15 ways as a sum of consecutive naturals, for example, 29961 + ... + 34477.

It is an arithmetic number, because the mean of its divisors is an integer number (10368810).

Almost surely, 2^145533223 is an apocalyptic number.

145533223 is a deficient number, since it is larger than the sum of its proper divisors (20367737).

145533223 is a wasteful number, since it uses less digits than its factorization.

145533223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658.

The product of its digits is 10800, while the sum is 28.

The square root of 145533223 is about 12063.7151408677. The cubic root of 145533223 is about 526.0019842629.

Adding to 145533223 its reverse (322335541), we get a palindrome (467868764).

The spelling of 145533223 in words is "one hundred forty-five million, five hundred thirty-three thousand, two hundred twenty-three".