16556245 has 16 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 12706624.

The previous prime is 16556233. The next prime is 16556257. The reversal of 16556245 is 54265561.

It is an interprime number because it is at equal distance from previous prime (16556233) and next prime (16556257).

It is a cyclic number.

It is not a de Polignac number, because 16556245 - 2¹⁹ = 16031957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16556245.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32664 + ... + 33166.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^16556245 is an apocalyptic number.

It is an amenable number.

16556245 is a deficient number, since it is larger than the sum of its proper divisors (4127915).

16556245 is a wasteful number, since it uses less digits than its factorization.

16556245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its digits is 36000, while the sum is 34.

The square root of 16556245 is about 4068.9365932637. The cubic root of 16556245 is about 254.8711126182.

The spelling of 16556245 in words is "sixteen million, five hundred fifty-six thousand, two hundred forty-five".