451106213 has 4 divisors (see below), whose sum is σ = 451743180. Its totient is φ = 450469248.

The previous prime is 451106207. The next prime is 451106251. The reversal of 451106213 is 312601154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29953729 + 421152484 = 5473^2 + 20522^2 .

It is a cyclic number.

It is not a de Polignac number, because 451106213 - 2⁴ = 451106197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451106263) 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, 317420 + ... + 318837.

It is an arithmetic number, because the mean of its divisors is an integer number (112935795).

Almost surely, 2^451106213 is an apocalyptic number.

It is an amenable number.

451106213 is a deficient number, since it is larger than the sum of its proper divisors (636967).

451106213 is an equidigital number, since it uses as much as digits as its factorization.

451106213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636966.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 451106213 is about 21239.2611217999. The cubic root of 451106213 is about 766.9368455656.

Adding to 451106213 its reverse (312601154), we get a palindrome (763707367).

The spelling of 451106213 in words is "four hundred fifty-one million, one hundred six thousand, two hundred thirteen".