15663141 has 12 divisors (see below), whose sum is σ = 24365068. Its totient is φ = 9638784.

The previous prime is 15663139. The next prime is 15663157. The reversal of 15663141 is 14136651.

It can be written as a sum of positive squares in 2 ways, for example, as 6022116 + 9641025 = 2454^2 + 3105^2 .

It is not a de Polignac number, because 15663141 - 2¹ = 15663139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15663121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66820 + ... + 67053.

Almost surely, 2^15663141 is an apocalyptic number.

It is an amenable number.

15663141 is a deficient number, since it is larger than the sum of its proper divisors (8701927).

15663141 is a wasteful number, since it uses less digits than its factorization.

15663141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133892 (or 133889 counting only the distinct ones).

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

The square root of 15663141 is about 3957.6686319094. The cubic root of 15663141 is about 250.2032533741.

Adding to 15663141 its reverse (14136651), we get a palindrome (29799792).

The spelling of 15663141 in words is "fifteen million, six hundred sixty-three thousand, one hundred forty-one".