456217 has 4 divisors (see below), whose sum is σ = 460836. Its totient is φ = 451600.

The previous prime is 456193. The next prime is 456223. The reversal of 456217 is 712654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712654 = 2 ⋅356327.

It can be written as a sum of positive squares in 2 ways, for example, as 197136 + 259081 = 444^2 + 509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-456217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 456191 and 456200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2158 + ... + 2359.

It is an arithmetic number, because the mean of its divisors is an integer number (115209).

2⁴⁵⁶²¹⁷ is an apocalyptic number.

It is an amenable number.

456217 is a deficient number, since it is larger than the sum of its proper divisors (4619).

456217 is a wasteful number, since it uses less digits than its factorization.

456217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618.

The product of its digits is 1680, while the sum is 25.

The square root of 456217 is about 675.4383761677. The cubic root of 456217 is about 76.9822301154.

The spelling of 456217 in words is "four hundred fifty-six thousand, two hundred seventeen".