12523771 has 4 divisors (see below), whose sum is σ = 13487152. Its totient is φ = 11560392.

The previous prime is 12523759. The next prime is 12523801. The reversal of 12523771 is 17732521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17732521 = 4211².

It is a cyclic number.

It is not a de Polignac number, because 12523771 - 2⁵ = 12523739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12523471) 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, 481671 + ... + 481696.

It is an arithmetic number, because the mean of its divisors is an integer number (3371788).

Almost surely, 2^12523771 is an apocalyptic number.

12523771 is a deficient number, since it is larger than the sum of its proper divisors (963381).

12523771 is an equidigital number, since it uses as much as digits as its factorization.

12523771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963380.

The product of its digits is 2940, while the sum is 28.

The square root of 12523771 is about 3538.8940362774. The cubic root of 12523771 is about 232.2264621356.

The spelling of 12523771 in words is "twelve million, five hundred twenty-three thousand, seven hundred seventy-one".