163558485 has 24 divisors (see below), whose sum is σ = 283900344. Its totient is φ = 87108480.

The previous prime is 163558469. The next prime is 163558487. The reversal of 163558485 is 584855361.

163558485 is a `hidden beast` number, since 1 + 63 + 5 + 584 + 8 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19342404 + 144216081 = 4398^2 + 12009^2 .

It is not a de Polignac number, because 163558485 - 2⁴ = 163558469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 163558485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163558487) 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 23 ways as a sum of consecutive naturals, for example, 36255 + ... + 40515.

It is an arithmetic number, because the mean of its divisors is an integer number (11829181).

Almost surely, 2^163558485 is an apocalyptic number.

163558485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163558485 is a deficient number, since it is larger than the sum of its proper divisors (120341859).

163558485 is a wasteful number, since it uses less digits than its factorization.

163558485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125 (or 5122 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 163558485 is about 12788.9985925404. The cubic root of 163558485 is about 546.8787223039.

Subtracting from 163558485 its product of digits (576000), we obtain a triangular number (162982485 = T₁₈₀₅₄).

The spelling of 163558485 in words is "one hundred sixty-three million, five hundred fifty-eight thousand, four hundred eighty-five".