455611987 has 2 divisors, whose sum is σ = 455611988. Its totient is φ = 455611986.

The previous prime is 455611957. The next prime is 455611997. The reversal of 455611987 is 789116554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 455611987 - 2¹⁵ = 455579219 is a prime.

It is not a weakly prime, because it can be changed into another prime (455611957) 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, 227805993 + 227805994.

It is an arithmetic number, because the mean of its divisors is an integer number (227805994).

Almost surely, 2^455611987 is an apocalyptic number.

455611987 is a deficient number, since it is larger than the sum of its proper divisors (1).

455611987 is an equidigital number, since it uses as much as digits as its factorization.

455611987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 46.

The square root of 455611987 is about 21345.0693838179. The cubic root of 455611987 is about 769.4818502008.

The spelling of 455611987 in words is "four hundred fifty-five million, six hundred eleven thousand, nine hundred eighty-seven".