145645252 has 12 divisors (see below), whose sum is σ = 256174380. Its totient is φ = 72452576.

The previous prime is 145645249. The next prime is 145645259. The reversal of 145645252 is 252546541.

145645252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 140564736 + 5080516 = 11856^2 + 2254^2 .

It is not an unprimeable number, because it can be changed into a prime (145645259) 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, 91627 + ... + 93202.

It is an arithmetic number, because the mean of its divisors is an integer number (21347865).

Almost surely, 2^145645252 is an apocalyptic number.

It is an amenable number.

145645252 is a deficient number, since it is larger than the sum of its proper divisors (110529128).

145645252 is a wasteful number, since it uses less digits than its factorization.

145645252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185030 (or 185028 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 145645252 is about 12068.3574690179. The cubic root of 145645252 is about 526.1369187727.

The spelling of 145645252 in words is "one hundred forty-five million, six hundred forty-five thousand, two hundred fifty-two".