16563141 has 24 divisors (see below), whose sum is σ = 27468480. Its totient is φ = 9421056.

The previous prime is 16563133. The next prime is 16563143. The reversal of 16563141 is 14136561.

16563141 is a `hidden beast` number, since 1 + 656 + 3 + 1 + 4 + 1 = 666.

It is not a de Polignac number, because 16563141 - 2³ = 16563133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16563143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17365 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (1144520).

Almost surely, 2^16563141 is an apocalyptic number.

It is an amenable number.

16563141 is a deficient number, since it is larger than the sum of its proper divisors (10905339).

16563141 is a wasteful number, since it uses less digits than its factorization.

16563141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1222 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 16563141 is about 4069.7839008970. The cubic root of 16563141 is about 254.9064939748.

The spelling of 16563141 in words is "sixteen million, five hundred sixty-three thousand, one hundred forty-one".