455020243 has 4 divisors (see below), whose sum is σ = 460132920. Its totient is φ = 449907568.

The previous prime is 455020231. The next prime is 455020277. The reversal of 455020243 is 342020554.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455020243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455020343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556205 + ... + 2556382.

It is an arithmetic number, because the mean of its divisors is an integer number (115033230).

Almost surely, 2^455020243 is an apocalyptic number.

455020243 is a deficient number, since it is larger than the sum of its proper divisors (5112677).

455020243 is an equidigital number, since it uses as much as digits as its factorization.

455020243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112676.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 455020243 is about 21331.2035056628. The cubic root of 455020243 is about 769.1485742613.

Adding to 455020243 its reverse (342020554), we get a palindrome (797040797).

The spelling of 455020243 in words is "four hundred fifty-five million, twenty thousand, two hundred forty-three".