354165561 has 8 divisors (see below), whose sum is σ = 524689760. Its totient is φ = 236110356.

The previous prime is 354165547. The next prime is 354165583. The reversal of 354165561 is 165561453.

354165561 is a `hidden beast` number, since 3 + 541 + 6 + 55 + 61 = 666.

It is not a de Polignac number, because 354165561 - 2⁷ = 354165433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354165521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6558595 + ... + 6558648.

It is an arithmetic number, because the mean of its divisors is an integer number (65586220).

Almost surely, 2^354165561 is an apocalyptic number.

It is an amenable number.

354165561 is a deficient number, since it is larger than the sum of its proper divisors (170524199).

354165561 is a wasteful number, since it uses less digits than its factorization.

354165561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13117252 (or 13117246 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 354165561 is about 18819.2869418583. The cubic root of 354165561 is about 707.5146594706.

The spelling of 354165561 in words is "three hundred fifty-four million, one hundred sixty-five thousand, five hundred sixty-one".