12161451 has 8 divisors (see below), whose sum is σ = 16247104. Its totient is φ = 8091720.

The previous prime is 12161449. The next prime is 12161453. The reversal of 12161451 is 15416121.

It is an interprime number because it is at equal distance from previous prime (12161449) and next prime (12161453).

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

It is not a de Polignac number, because 12161451 - 2¹ = 12161449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12161453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2065 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (2030888).

Almost surely, 2^12161451 is an apocalyptic number.

12161451 is a deficient number, since it is larger than the sum of its proper divisors (4085653).

12161451 is an equidigital number, since it uses as much as digits as its factorization.

12161451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961.

The product of its digits is 240, while the sum is 21.

The square root of 12161451 is about 3487.3272000201. The cubic root of 12161451 is about 229.9650293397.

Adding to 12161451 its reverse (15416121), we get a palindrome (27577572).

The spelling of 12161451 in words is "twelve million, one hundred sixty-one thousand, four hundred fifty-one".