12538577 has 4 divisors (see below), whose sum is σ = 12604416. Its totient is φ = 12472740.

The previous prime is 12538549. The next prime is 12538607. The reversal of 12538577 is 77583521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12538577 - 2⁸ = 12538321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12538577.

It is not an unprimeable number, because it can be changed into a prime (12538517) 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, 32633 + ... + 33014.

It is an arithmetic number, because the mean of its divisors is an integer number (3151104).

Almost surely, 2^12538577 is an apocalyptic number.

It is an amenable number.

12538577 is a deficient number, since it is larger than the sum of its proper divisors (65839).

12538577 is an equidigital number, since it uses as much as digits as its factorization.

12538577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65838.

The product of its digits is 58800, while the sum is 38.

The square root of 12538577 is about 3540.9853148524. The cubic root of 12538577 is about 232.3179412626.

The spelling of 12538577 in words is "twelve million, five hundred thirty-eight thousand, five hundred seventy-seven".