12562161 has 8 divisors (see below), whose sum is σ = 17289984. Its totient is φ = 8104560.

The previous prime is 12562159. The next prime is 12562169. The reversal of 12562161 is 16126521.

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

It is not a de Polignac number, because 12562161 - 2¹ = 12562159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12562169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67446 + ... + 67631.

It is an arithmetic number, because the mean of its divisors is an integer number (2161248).

Almost surely, 2^12562161 is an apocalyptic number.

It is an amenable number.

12562161 is a deficient number, since it is larger than the sum of its proper divisors (4727823).

12562161 is a wasteful number, since it uses less digits than its factorization.

12562161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135111.

The product of its digits is 720, while the sum is 24.

The square root of 12562161 is about 3544.3138969341. The cubic root of 12562161 is about 232.4635068171.

Adding to 12562161 its reverse (16126521), we get a palindrome (28688682).

The spelling of 12562161 in words is "twelve million, five hundred sixty-two thousand, one hundred sixty-one".