451210145 has 4 divisors (see below), whose sum is σ = 541452180. Its totient is φ = 360968112.

The previous prime is 451210139. The next prime is 451210163. The reversal of 451210145 is 541012154.

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 109662784 + 341547361 = 10472^2 + 18481^2 .

It is a cyclic number.

It is not a de Polignac number, because 451210145 - 2⁴ = 451210129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451210145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45121010 + ... + 45121019.

It is an arithmetic number, because the mean of its divisors is an integer number (135363045).

Almost surely, 2^451210145 is an apocalyptic number.

It is an amenable number.

451210145 is a deficient number, since it is larger than the sum of its proper divisors (90242035).

451210145 is an equidigital number, since it uses as much as digits as its factorization.

451210145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90242034.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 451210145 is about 21241.7076761733. The cubic root of 451210145 is about 766.9957401653.

Adding to 451210145 its reverse (541012154), we get a palindrome (992222299).

The spelling of 451210145 in words is "four hundred fifty-one million, two hundred ten thousand, one hundred forty-five".