12015953 has 2 divisors, whose sum is σ = 12015954. Its totient is φ = 12015952.

The previous prime is 12015943. The next prime is 12015967. The reversal of 12015953 is 35951021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9560464 + 2455489 = 3092^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 12015953 - 2⁴ = 12015937 is a prime.

It is not a weakly prime, because it can be changed into another prime (12015943) 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 as a sum of consecutive naturals, namely, 6007976 + 6007977.

It is an arithmetic number, because the mean of its divisors is an integer number (6007977).

Almost surely, 2^12015953 is an apocalyptic number.

It is an amenable number.

12015953 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015953 is an equidigital number, since it uses as much as digits as its factorization.

12015953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 12015953 is about 3466.4034675727. The cubic root of 12015953 is about 229.0442570654.

Adding to 12015953 its reverse (35951021), we get a palindrome (47966974).

The spelling of 12015953 in words is "twelve million, fifteen thousand, nine hundred fifty-three".