16652257 has 8 divisors (see below), whose sum is σ = 17263400. Its totient is φ = 16049664.

The previous prime is 16652221. The next prime is 16652261. The reversal of 16652257 is 75225661.

It can be written as a sum of positive squares in 4 ways, for example, as 7706176 + 8946081 = 2776^2 + 2991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16652257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16652287) 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, 1969 + ... + 6097.

It is an arithmetic number, because the mean of its divisors is an integer number (2157925).

Almost surely, 2^16652257 is an apocalyptic number.

It is an amenable number.

16652257 is a deficient number, since it is larger than the sum of its proper divisors (611143).

16652257 is a wasteful number, since it uses less digits than its factorization.

16652257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275.

The product of its digits is 25200, while the sum is 34.

The square root of 16652257 is about 4080.7177064825. The cubic root of 16652257 is about 255.3628411490.

The spelling of 16652257 in words is "sixteen million, six hundred fifty-two thousand, two hundred fifty-seven".