16235561 has 8 divisors (see below), whose sum is σ = 17483040. Its totient is φ = 15020608.

The previous prime is 16235503. The next prime is 16235579. The reversal of 16235561 is 16553261.

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 16235561 - 2⁶ = 16235497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16235591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7091 + ... + 9096.

It is an arithmetic number, because the mean of its divisors is an integer number (2185380).

Almost surely, 2^16235561 is an apocalyptic number.

It is an amenable number.

16235561 is a deficient number, since it is larger than the sum of its proper divisors (1247479).

16235561 is a wasteful number, since it uses less digits than its factorization.

16235561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16263.

The product of its digits is 5400, while the sum is 29.

The square root of 16235561 is about 4029.3375386036. The cubic root of 16235561 is about 253.2148081670.

The spelling of 16235561 in words is "sixteen million, two hundred thirty-five thousand, five hundred sixty-one".