145542223 has 8 divisors (see below), whose sum is σ = 153350000. Its totient is φ = 137749248.

The previous prime is 145542197. The next prime is 145542227. The reversal of 145542223 is 322245541.

145542223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145542223 - 2¹⁷ = 145411151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145542191 and 145542200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145542227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20665 + ... + 26797.

It is an arithmetic number, because the mean of its divisors is an integer number (19168750).

Almost surely, 2^145542223 is an apocalyptic number.

145542223 is a deficient number, since it is larger than the sum of its proper divisors (7807777).

145542223 is a wasteful number, since it uses less digits than its factorization.

145542223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401.

The product of its digits is 9600, while the sum is 28.

The square root of 145542223 is about 12064.0881545188. The cubic root of 145542223 is about 526.0128269653.

Adding to 145542223 its reverse (322245541), we get a palindrome (467787764).

It can be divided in two parts, 14554222 and 3, that added together give a square (14554225 = 3815²).

The spelling of 145542223 in words is "one hundred forty-five million, five hundred forty-two thousand, two hundred twenty-three".