16540101 has 6 divisors (see below), whose sum is σ = 23891270. Its totient is φ = 11026728.

The previous prime is 16540093. The next prime is 16540103. The reversal of 16540101 is 10104561.

16540101 is a `hidden beast` number, since 1 + 654 + 0 + 10 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 15876 = 4065^2 + 126^2 .

It is not a de Polignac number, because 16540101 - 2³ = 16540093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16540103) 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 5 ways as a sum of consecutive naturals, for example, 918886 + ... + 918903.

Almost surely, 2^16540101 is an apocalyptic number.

It is an amenable number.

16540101 is a deficient number, since it is larger than the sum of its proper divisors (7351169).

16540101 is a wasteful number, since it uses less digits than its factorization.

16540101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837795 (or 1837792 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 16540101 is about 4066.9522987121. The cubic root of 16540101 is about 254.7882440418.

Adding to 16540101 its reverse (10104561), we get a palindrome (26644662).

It can be divided in two parts, 16540 and 101, that added together give a square (16641 = 129²).

The spelling of 16540101 in words is "sixteen million, five hundred forty thousand, one hundred one".