12523857 has 8 divisors (see below), whose sum is σ = 16725984. Its totient is φ = 8335488.

The previous prime is 12523843. The next prime is 12523859. The reversal of 12523857 is 75832521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12523857 - 2⁷ = 12523729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12523859) 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 in 7 ways as a sum of consecutive naturals, for example, 1083 + ... + 5120.

It is an arithmetic number, because the mean of its divisors is an integer number (2090748).

Almost surely, 2^12523857 is an apocalyptic number.

It is an amenable number.

12523857 is a deficient number, since it is larger than the sum of its proper divisors (4202127).

12523857 is an equidigital number, since it uses as much as digits as its factorization.

12523857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879.

The product of its digits is 16800, while the sum is 33.

The square root of 12523857 is about 3538.9061869453. The cubic root of 12523857 is about 232.2269936962.

The spelling of 12523857 in words is "twelve million, five hundred twenty-three thousand, eight hundred fifty-seven".