455442817 has 4 divisors (see below), whose sum is σ = 455491540. Its totient is φ = 455394096.

The previous prime is 455442811. The next prime is 455442851. The reversal of 455442817 is 718244554.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 718244554 = 2 ⋅359122277.

It can be written as a sum of positive squares in 2 ways, for example, as 370139121 + 85303696 = 19239^2 + 9236^2 .

It is a cyclic number.

It is not a de Polignac number, because 455442817 - 2³ = 455442809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 455442817.

It is not an unprimeable number, because it can be changed into a prime (455442811) 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, 5442 + ... + 30667.

It is an arithmetic number, because the mean of its divisors is an integer number (113872885).

Almost surely, 2^455442817 is an apocalyptic number.

It is an amenable number.

455442817 is a deficient number, since it is larger than the sum of its proper divisors (48723).

455442817 is a wasteful number, since it uses less digits than its factorization.

455442817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48722.

The product of its digits is 179200, while the sum is 40.

The square root of 455442817 is about 21341.1062740431. The cubic root of 455442817 is about 769.3866014929.

The spelling of 455442817 in words is "four hundred fifty-five million, four hundred forty-two thousand, eight hundred seventeen".