355565161 has 8 divisors (see below), whose sum is σ = 416271744. Its totient is φ = 297336480.

The previous prime is 355565141. The next prime is 355565179. The reversal of 355565161 is 161565553.

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

It is not a de Polignac number, because 355565161 - 2⁵ = 355565129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 355565161.

It is not an unprimeable number, because it can be changed into a prime (355565101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619165 + ... + 619738.

It is an arithmetic number, because the mean of its divisors is an integer number (52033968).

Almost surely, 2^355565161 is an apocalyptic number.

It is an amenable number.

355565161 is a deficient number, since it is larger than the sum of its proper divisors (60706583).

355565161 is a wasteful number, since it uses less digits than its factorization.

355565161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238951.

The product of its digits is 67500, while the sum is 37.

The square root of 355565161 is about 18856.4355327299. The cubic root of 355565161 is about 708.4454256317.

It can be divided in two parts, 355 and 565161, that added together give a triangular number (565516 = T₁₀₆₃).

The spelling of 355565161 in words is "three hundred fifty-five million, five hundred sixty-five thousand, one hundred sixty-one".