451225100 has 36 divisors (see below), whose sum is σ = 980083104. Its totient is φ = 180319680.

The previous prime is 451225081. The next prime is 451225111. The reversal of 451225100 is 1522154.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196157 + ... + 198443.

Almost surely, 2^451225100 is an apocalyptic number.

It is an amenable number.

451225100 is an abundant number, since it is smaller than the sum of its proper divisors (528858004).

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

451225100 is a wasteful number, since it uses less digits than its factorization.

451225100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 451225100 is about 21242.0596929770. The cubic root of 451225100 is about 767.0042138921.

Adding to 451225100 its reverse (1522154), we get a palindrome (452747254).

The spelling of 451225100 in words is "four hundred fifty-one million, two hundred twenty-five thousand, one hundred".