455281987 has 8 divisors (see below), whose sum is σ = 475292160. Its totient is φ = 435289800.

The previous prime is 455281963. The next prime is 455281993. The reversal of 455281987 is 789182554.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 455281987 - 2¹¹ = 455279939 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 455281987.

It is not an unprimeable number, because it can be changed into a prime (455281927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87612 + ... + 92662.

It is an arithmetic number, because the mean of its divisors is an integer number (59411520).

Almost surely, 2^455281987 is an apocalyptic number.

455281987 is a deficient number, since it is larger than the sum of its proper divisors (20010173).

455281987 is a wasteful number, since it uses less digits than its factorization.

455281987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8993.

The product of its digits is 806400, while the sum is 49.

The square root of 455281987 is about 21337.3378611297. The cubic root of 455281987 is about 769.2960266276.

The spelling of 455281987 in words is "four hundred fifty-five million, two hundred eighty-one thousand, nine hundred eighty-seven".