145821452 has 18 divisors (see below), whose sum is σ = 296851212. Its totient is φ = 62494824.

The previous prime is 145821451. The next prime is 145821463. The reversal of 145821452 is 254128541.

It is not an unprimeable number, because it can be changed into a prime (145821451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371798 + ... + 372189.

It is an arithmetic number, because the mean of its divisors is an integer number (16491734).

Almost surely, 2^145821452 is an apocalyptic number.

It is an amenable number.

145821452 is an abundant number, since it is smaller than the sum of its proper divisors (151029760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145821452 is a wasteful number, since it uses less digits than its factorization.

145821452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744005 (or 743996 counting only the distinct ones).

The product of its digits is 12800, while the sum is 32.

The square root of 145821452 is about 12075.6553445351. The cubic root of 145821452 is about 526.3490047929.

Adding to 145821452 its reverse (254128541), we get a palindrome (399949993).

The spelling of 145821452 in words is "one hundred forty-five million, eight hundred twenty-one thousand, four hundred fifty-two".