145563223 has 8 divisors (see below), whose sum is σ = 157330208. Its totient is φ = 133877664.

The previous prime is 145563221. The next prime is 145563233. The reversal of 145563223 is 322365541.

It is a happy number.

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 145563223 - 2¹ = 145563221 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 (145563221) 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, 16611 + ... + 23812.

It is an arithmetic number, because the mean of its divisors is an integer number (19666276).

Almost surely, 2^145563223 is an apocalyptic number.

145563223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145563223 is a deficient number, since it is larger than the sum of its proper divisors (11766985).

145563223 is a wasteful number, since it uses less digits than its factorization.

145563223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40713.

The product of its digits is 21600, while the sum is 31.

The square root of 145563223 is about 12064.9584748560. The cubic root of 145563223 is about 526.0381248660.

The spelling of 145563223 in words is "one hundred forty-five million, five hundred sixty-three thousand, two hundred twenty-three".