16241561 has 8 divisors (see below), whose sum is σ = 19538880. Its totient is φ = 13188528.

The previous prime is 16241549. The next prime is 16241567. The reversal of 16241561 is 16514261.

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 16241561 - 2¹⁰ = 16240537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16241561.

It is not an unprimeable number, because it can be changed into a prime (16241567) 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, 60926 + ... + 61191.

It is an arithmetic number, because the mean of its divisors is an integer number (2442360).

Almost surely, 2^16241561 is an apocalyptic number.

It is an amenable number.

16241561 is a deficient number, since it is larger than the sum of its proper divisors (3297319).

16241561 is a wasteful number, since it uses less digits than its factorization.

16241561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122143.

The product of its digits is 1440, while the sum is 26.

The square root of 16241561 is about 4030.0820090911. The cubic root of 16241561 is about 253.2459969411.

The spelling of 16241561 in words is "sixteen million, two hundred forty-one thousand, five hundred sixty-one".