16561096 has 8 divisors (see below), whose sum is σ = 31052070. Its totient is φ = 8280544.

The previous prime is 16561093. The next prime is 16561147. The reversal of 16561096 is 69016561.

It can be written as a sum of positive squares in only one way, i.e., 16112196 + 448900 = 4014^2 + 670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16561091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035061 + ... + 1035076.

Almost surely, 2^16561096 is an apocalyptic number.

It is an amenable number.

16561096 is a deficient number, since it is larger than the sum of its proper divisors (14490974).

16561096 is a wasteful number, since it uses less digits than its factorization.

16561096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070143 (or 2070139 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 16561096 is about 4069.5326513004. The cubic root of 16561096 is about 254.8960027031.

The spelling of 16561096 in words is "sixteen million, five hundred sixty-one thousand, ninety-six".