445401252 has 72 divisors (see below), whose sum is σ = 1147945344. Its totient is φ = 145587456.

The previous prime is 445401221. The next prime is 445401263. The reversal of 445401252 is 252104544.

445401252 is a `hidden beast` number, since 4 + 4 + 5 + 401 + 252 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 418473 + ... + 419535.

Almost surely, 2^445401252 is an apocalyptic number.

It is an amenable number.

445401252 is an abundant number, since it is smaller than the sum of its proper divisors (702544092).

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

445401252 is a wasteful number, since it uses less digits than its factorization.

445401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 445401252 is about 21104.5315513043. The cubic root of 445401252 is about 763.6900714699.

Adding to 445401252 its reverse (252104544), we get a palindrome (697505796).

The spelling of 445401252 in words is "four hundred forty-five million, four hundred one thousand, two hundred fifty-two".