455888981 has 2 divisors, whose sum is σ = 455888982. Its totient is φ = 455888980.

The previous prime is 455888977. The next prime is 455888999. The reversal of 455888981 is 189888554.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451180081 + 4708900 = 21241^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 455888981 - 2² = 455888977 is a prime.

It is a super-2 number, since 2×455888981² = 415669525994436722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455884981) 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 as a sum of consecutive naturals, namely, 227944490 + 227944491.

It is an arithmetic number, because the mean of its divisors is an integer number (227944491).

Almost surely, 2^455888981 is an apocalyptic number.

It is an amenable number.

455888981 is a deficient number, since it is larger than the sum of its proper divisors (1).

455888981 is an equidigital number, since it uses as much as digits as its factorization.

455888981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3686400, while the sum is 56.

The square root of 455888981 is about 21351.5568753194. The cubic root of 455888981 is about 769.6377567487.

It can be divided in two parts, 4558 and 88981, that added together give a palindrome (93539).

The spelling of 455888981 in words is "four hundred fifty-five million, eight hundred eighty-eight thousand, nine hundred eighty-one".