451221426 has 36 divisors (see below), whose sum is σ = 984247758. Its totient is φ = 149396832.

The previous prime is 451221389. The next prime is 451221437. The reversal of 451221426 is 624122154.

451221426 is a `hidden beast` number, since 4 + 512 + 2 + 142 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 450500625 + 720801 = 21225^2 + 849^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 451221426.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1441446 + ... + 1441758.

Almost surely, 2^451221426 is an apocalyptic number.

451221426 is an abundant number, since it is smaller than the sum of its proper divisors (533026332).

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

451221426 is a wasteful number, since it uses less digits than its factorization.

451221426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 601 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 451221426 is about 21241.9732134282. The cubic root of 451221426 is about 767.0021321661.

The spelling of 451221426 in words is "four hundred fifty-one million, two hundred twenty-one thousand, four hundred twenty-six".