12145537 has 2 divisors, whose sum is σ = 12145538. Its totient is φ = 12145536.

The previous prime is 12145513. The next prime is 12145561. The reversal of 12145537 is 73554121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12145513) and next prime (12145561).

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 201601 = 3456^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 12145537 - 2¹⁵ = 12112769 is a prime.

It is not a weakly prime, because it can be changed into another prime (12145597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072768 + 6072769.

It is an arithmetic number, because the mean of its divisors is an integer number (6072769).

Almost surely, 2^12145537 is an apocalyptic number.

It is an amenable number.

12145537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145537 is an equidigital number, since it uses as much as digits as its factorization.

12145537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 12145537 is about 3485.0447629837. The cubic root of 12145537 is about 229.8646778017.

Adding to 12145537 its reverse (73554121), we get a palindrome (85699658).

The spelling of 12145537 in words is "twelve million, one hundred forty-five thousand, five hundred thirty-seven".