145820452 has 24 divisors (see below), whose sum is σ = 258759200. Its totient is φ = 71896896.

The previous prime is 145820443. The next prime is 145820453. The reversal of 145820452 is 254028541.

It is not an unprimeable number, because it can be changed into a prime (145820453) 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, 89824 + ... + 91432.

Almost surely, 2^145820452 is an apocalyptic number.

It is an amenable number.

145820452 is a deficient number, since it is larger than the sum of its proper divisors (112938748).

145820452 is a wasteful number, since it uses less digits than its factorization.

145820452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 145820452 is about 12075.6139388439. The cubic root of 145820452 is about 526.3478016087.

Adding to 145820452 its reverse (254028541), we get a palindrome (399848993).

The spelling of 145820452 in words is "one hundred forty-five million, eight hundred twenty thousand, four hundred fifty-two".