16795561 has 4 divisors (see below), whose sum is σ = 16807824. Its totient is φ = 16783300.

The previous prime is 16795549. The next prime is 16795567. The reversal of 16795561 is 16559761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16795561 - 2⁷ = 16795433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16795567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3775 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (4201956).

Almost surely, 2^16795561 is an apocalyptic number.

It is an amenable number.

16795561 is a deficient number, since it is larger than the sum of its proper divisors (12263).

16795561 is a wasteful number, since it uses less digits than its factorization.

16795561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12262.

The product of its digits is 56700, while the sum is 40.

The square root of 16795561 is about 4098.2387680563. The cubic root of 16795561 is about 256.0932735068.

The spelling of 16795561 in words is "sixteen million, seven hundred ninety-five thousand, five hundred sixty-one".