450212215 has 4 divisors (see below), whose sum is σ = 540254664. Its totient is φ = 360169768.

The previous prime is 450212209. The next prime is 450212233. The reversal of 450212215 is 512212054.

450212215 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512212054 = 2 ⋅256106027.

It is a cyclic number.

It is not a de Polignac number, because 450212215 - 2⁹ = 450211703 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 45021217 + ... + 45021226.

It is an arithmetic number, because the mean of its divisors is an integer number (135063666).

Almost surely, 2^450212215 is an apocalyptic number.

450212215 is a deficient number, since it is larger than the sum of its proper divisors (90042449).

450212215 is an equidigital number, since it uses as much as digits as its factorization.

450212215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90042448.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 450212215 is about 21218.2048015378. The cubic root of 450212215 is about 766.4298744671.

Adding to 450212215 its reverse (512212054), we get a palindrome (962424269).

The spelling of 450212215 in words is "four hundred fifty million, two hundred twelve thousand, two hundred fifteen".