345505161 has 16 divisors (see below), whose sum is σ = 488160000. Its totient is φ = 216615168.

The previous prime is 345505141. The next prime is 345505163. The reversal of 345505161 is 161505543.

It is not a de Polignac number, because 345505161 - 2¹⁴ = 345488777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345505163) 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 15 ways as a sum of consecutive naturals, for example, 100255 + ... + 103643.

It is an arithmetic number, because the mean of its divisors is an integer number (30510000).

Almost surely, 2^345505161 is an apocalyptic number.

It is an amenable number.

345505161 is a deficient number, since it is larger than the sum of its proper divisors (142654839).

345505161 is a wasteful number, since it uses less digits than its factorization.

345505161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 345505161 is about 18587.7691238083. The cubic root of 345505161 is about 701.7000589561.

The spelling of 345505161 in words is "three hundred forty-five million, five hundred five thousand, one hundred sixty-one".