452521812 has 12 divisors (see below), whose sum is σ = 1055884256. Its totient is φ = 150840600.

The previous prime is 452521789. The next prime is 452521813. The reversal of 452521812 is 218125254.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 452521812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452521813) 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, 18855064 + ... + 18855087.

Almost surely, 2^452521812 is an apocalyptic number.

It is an amenable number.

452521812 is an abundant number, since it is smaller than the sum of its proper divisors (603362444).

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

452521812 is a wasteful number, since it uses less digits than its factorization.

452521812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37710158 (or 37710156 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 452521812 is about 21272.5600716040. The cubic root of 452521812 is about 767.7382395151.

The spelling of 452521812 in words is "four hundred fifty-two million, five hundred twenty-one thousand, eight hundred twelve".