12161503 has 8 divisors (see below), whose sum is σ = 12751200. Its totient is φ = 11576928.

The previous prime is 12161489. The next prime is 12161521. The reversal of 12161503 is 30516121.

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

It is a cyclic number.

It is not a de Polignac number, because 12161503 - 2⁹ = 12160991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161533) 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, 4113 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (1593900).

Almost surely, 2^12161503 is an apocalyptic number.

12161503 is a deficient number, since it is larger than the sum of its proper divisors (589697).

12161503 is a wasteful number, since it uses less digits than its factorization.

12161503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12161503 is about 3487.3346555787. The cubic root of 12161503 is about 229.9653571011.

Adding to 12161503 its reverse (30516121), we get a palindrome (42677624).

The spelling of 12161503 in words is "twelve million, one hundred sixty-one thousand, five hundred three".