354091561 has 8 divisors (see below), whose sum is σ = 362678400. Its totient is φ = 345548688.

The previous prime is 354091523. The next prime is 354091571. The reversal of 354091561 is 165190453.

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

It is a cyclic number.

It is not a de Polignac number, because 354091561 - 2¹⁹ = 353567273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354091571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5610 + ... + 27196.

It is an arithmetic number, because the mean of its divisors is an integer number (45334800).

Almost surely, 2^354091561 is an apocalyptic number.

It is an amenable number.

354091561 is a deficient number, since it is larger than the sum of its proper divisors (8586839).

354091561 is a wasteful number, since it uses less digits than its factorization.

354091561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21983.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 354091561 is about 18817.3207710343. The cubic root of 354091561 is about 707.4653795693.

The spelling of 354091561 in words is "three hundred fifty-four million, ninety-one thousand, five hundred sixty-one".