12145051 has 4 divisors (see below), whose sum is σ = 12157312. Its totient is φ = 12132792.

The previous prime is 12145043. The next prime is 12145057. The reversal of 12145051 is 15054121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15054121 = 23 ⋅654527.

It is a cyclic number.

It is not a de Polignac number, because 12145051 - 2³ = 12145043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12145057) 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 3 ways as a sum of consecutive naturals, for example, 4500 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (3039328).

Almost surely, 2^12145051 is an apocalyptic number.

12145051 is a deficient number, since it is larger than the sum of its proper divisors (12261).

12145051 is a wasteful number, since it uses less digits than its factorization.

12145051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 12145051 is about 3484.9750357786. The cubic root of 12145051 is about 229.8616117722.

Adding to 12145051 its reverse (15054121), we get a palindrome (27199172).

The spelling of 12145051 in words is "twelve million, one hundred forty-five thousand, fifty-one".