145644233 has 8 divisors (see below), whose sum is σ = 166762560. Its totient is φ = 124603920.

The previous prime is 145644203. The next prime is 145644241. The reversal of 145644233 is 332446541.

145644233 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 not a de Polignac number, because 145644233 - 2⁸ = 145643977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145644233.

It is not an unprimeable number, because it can be changed into a prime (145644203) 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, 15443 + ... + 23016.

It is an arithmetic number, because the mean of its divisors is an integer number (20845320).

Almost surely, 2^145644233 is an apocalyptic number.

It is an amenable number.

145644233 is a deficient number, since it is larger than the sum of its proper divisors (21118327).

145644233 is an equidigital number, since it uses as much as digits as its factorization.

145644233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39007.

The product of its digits is 34560, while the sum is 32.

The square root of 145644233 is about 12068.3152511028. The cubic root of 145644233 is about 526.1356917393.

The spelling of 145644233 in words is "one hundred forty-five million, six hundred forty-four thousand, two hundred thirty-three".