12455567 has 4 divisors (see below), whose sum is σ = 12464520. Its totient is φ = 12446616.

The previous prime is 12455563. The next prime is 12455579. The reversal of 12455567 is 76555421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76555421 = 683 ⋅112087.

It is a cyclic number.

It is not a de Polignac number, because 12455567 - 2² = 12455563 is a prime.

It is a super-2 number, since 2×12455567² = 310282298582978, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455563) 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, 1892 + ... + 5337.

It is an arithmetic number, because the mean of its divisors is an integer number (3116130).

Almost surely, 2^12455567 is an apocalyptic number.

12455567 is a deficient number, since it is larger than the sum of its proper divisors (8953).

12455567 is an equidigital number, since it uses as much as digits as its factorization.

12455567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8952.

The product of its digits is 42000, while the sum is 35.

The square root of 12455567 is about 3529.2445367245. The cubic root of 12455567 is about 231.8041289211.

The spelling of 12455567 in words is "twelve million, four hundred fifty-five thousand, five hundred sixty-seven".