12523545 has 16 divisors (see below), whose sum is σ = 22264320. Its totient is φ = 6679152.

The previous prime is 12523541. The next prime is 12523547. The reversal of 12523545 is 54532521.

It is a happy number.

12523545 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12523545 - 2² = 12523541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12523541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46249 + ... + 46518.

It is an arithmetic number, because the mean of its divisors is an integer number (1391520).

Almost surely, 2^12523545 is an apocalyptic number.

12523545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12523545 is a deficient number, since it is larger than the sum of its proper divisors (9740775).

12523545 is an equidigital number, since it uses as much as digits as its factorization.

12523545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92781 (or 92775 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 12523545 is about 3538.8621052536. The cubic root of 12523545 is about 232.2250652322.

The spelling of 12523545 in words is "twelve million, five hundred twenty-three thousand, five hundred forty-five".