163550545 has 8 divisors (see below), whose sum is σ = 201565224. Its totient is φ = 127304064.

The previous prime is 163550533. The next prime is 163550573. The reversal of 163550545 is 545055361.

It can be written as a sum of positive squares in 4 ways, for example, as 39740416 + 123810129 = 6304^2 + 11127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163550545 is a prime.

It is a super-3 number, since 3×163550545³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163550545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441844 + ... + 442213.

It is an arithmetic number, because the mean of its divisors is an integer number (25195653).

Almost surely, 2^163550545 is an apocalyptic number.

It is an amenable number.

163550545 is a deficient number, since it is larger than the sum of its proper divisors (38014679).

163550545 is an equidigital number, since it uses as much as digits as its factorization.

163550545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884099.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 163550545 is about 12788.6881657190. The cubic root of 163550545 is about 546.8698726921.

The spelling of 163550545 in words is "one hundred sixty-three million, five hundred fifty thousand, five hundred forty-five".