345518161 has 2 divisors, whose sum is σ = 345518162. Its totient is φ = 345518160.

The previous prime is 345518153. The next prime is 345518189. The reversal of 345518161 is 161815543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331968400 + 13549761 = 18220^2 + 3681^2 .

It is a cyclic number.

It is not a de Polignac number, because 345518161 - 2³ = 345518153 is a prime.

It is not a weakly prime, because it can be changed into another prime (345518561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172759080 + 172759081.

It is an arithmetic number, because the mean of its divisors is an integer number (172759081).

Almost surely, 2^345518161 is an apocalyptic number.

It is an amenable number.

345518161 is a deficient number, since it is larger than the sum of its proper divisors (1).

345518161 is an equidigital number, since it uses as much as digits as its factorization.

345518161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 34.

The square root of 345518161 is about 18588.1188128331. The cubic root of 345518161 is about 701.7088595834.

The spelling of 345518161 in words is "three hundred forty-five million, five hundred eighteen thousand, one hundred sixty-one".