145453223 has 4 divisors (see below), whose sum is σ = 145927320. Its totient is φ = 144979128.

The previous prime is 145453169. The next prime is 145453307. The reversal of 145453223 is 322354541.

It is a happy number.

145453223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145453223 - 2¹⁴ = 145436839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145453123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236588 + ... + 237201.

It is an arithmetic number, because the mean of its divisors is an integer number (36481830).

Almost surely, 2^145453223 is an apocalyptic number.

145453223 is a deficient number, since it is larger than the sum of its proper divisors (474097).

145453223 is an equidigital number, since it uses as much as digits as its factorization.

145453223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474096.

The product of its digits is 14400, while the sum is 29.

The square root of 145453223 is about 12060.3989569168. The cubic root of 145453223 is about 525.9055850336.

The spelling of 145453223 in words is "one hundred forty-five million, four hundred fifty-three thousand, two hundred twenty-three".