12145651 has 8 divisors (see below), whose sum is σ = 14203904. Its totient is φ = 10168200.

The previous prime is 12145607. The next prime is 12145669. The reversal of 12145651 is 15654121.

It is a happy number.

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

It is not a de Polignac number, because 12145651 - 2¹³ = 12137459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12145151) 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, 19875 + ... + 20476.

It is an arithmetic number, because the mean of its divisors is an integer number (1775488).

Almost surely, 2^12145651 is an apocalyptic number.

12145651 is a deficient number, since it is larger than the sum of its proper divisors (2058253).

12145651 is an equidigital number, since it uses as much as digits as its factorization.

12145651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40401.

The product of its digits is 1200, while the sum is 25.

The square root of 12145651 is about 3485.0611185458. The cubic root of 12145651 is about 229.8653969820.

Adding to 12145651 its reverse (15654121), we get a palindrome (27799772).

The spelling of 12145651 in words is "twelve million, one hundred forty-five thousand, six hundred fifty-one".