455565987 has 12 divisors (see below), whose sum is σ = 679267264. Its totient is φ = 293913360.

The previous prime is 455565973. The next prime is 455566009. The reversal of 455565987 is 789565554.

455565987 is a `hidden beast` number, since 4 + 5 + 556 + 5 + 9 + 87 = 666.

It is not a de Polignac number, because 455565987 - 2⁶ = 455565923 is a prime.

It is a super-2 number, since 2×455565987² = 415080737022568338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455565937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816148 + ... + 816705.

Almost surely, 2^455565987 is an apocalyptic number.

455565987 is a deficient number, since it is larger than the sum of its proper divisors (223701277).

455565987 is a wasteful number, since it uses less digits than its factorization.

455565987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632890 (or 1632887 counting only the distinct ones).

The product of its digits is 7560000, while the sum is 54.

The square root of 455565987 is about 21343.9918243987. The cubic root of 455565987 is about 769.4559529041.

The spelling of 455565987 in words is "four hundred fifty-five million, five hundred sixty-five thousand, nine hundred eighty-seven".