163550 has 12 divisors (see below), whose sum is σ = 304296. Its totient is φ = 65400.

The previous prime is 163543. The next prime is 163561. The reversal of 163550 is 55361.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

163550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 1586 + ... + 1685.

It is an arithmetic number, because the mean of its divisors is an integer number (25358).

2¹⁶³⁵⁵⁰ is an apocalyptic number.

163550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163550 is a deficient number, since it is larger than the sum of its proper divisors (140746).

163550 is a wasteful number, since it uses less digits than its factorization.

163550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283 (or 3278 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 163550 is about 404.4131550778. The cubic root of 163550 is about 54.6869265246.

The spelling of 163550 in words is "one hundred sixty-three thousand, five hundred fifty".