12015497 has 4 divisors (see below), whose sum is σ = 12939780. Its totient is φ = 11091216.

The previous prime is 12015473. The next prime is 12015511. The reversal of 12015497 is 79451021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79451021 = 13 ⋅6111617.

It can be written as a sum of positive squares in 2 ways, for example, as 5067001 + 6948496 = 2251^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 12015497 - 2⁶ = 12015433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12015427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462122 + ... + 462147.

It is an arithmetic number, because the mean of its divisors is an integer number (3234945).

Almost surely, 2^12015497 is an apocalyptic number.

It is an amenable number.

12015497 is a deficient number, since it is larger than the sum of its proper divisors (924283).

12015497 is an equidigital number, since it uses as much as digits as its factorization.

12015497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924282.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 12015497 is about 3466.3376927241. The cubic root of 12015497 is about 229.0413596533.

The spelling of 12015497 in words is "twelve million, fifteen thousand, four hundred ninety-seven".