12457477 has 4 divisors (see below), whose sum is σ = 12476556. Its totient is φ = 12438400.

The previous prime is 12457457. The next prime is 12457499. The reversal of 12457477 is 77475421.

12457477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77475421 = 181 ⋅428041.

It can be written as a sum of positive squares in 2 ways, for example, as 10042561 + 2414916 = 3169^2 + 1554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12457477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12457427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8524 + ... + 9877.

It is an arithmetic number, because the mean of its divisors is an integer number (3119139).

Almost surely, 2^12457477 is an apocalyptic number.

It is an amenable number.

12457477 is a deficient number, since it is larger than the sum of its proper divisors (19079).

12457477 is an equidigital number, since it uses as much as digits as its factorization.

12457477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19078.

The product of its digits is 54880, while the sum is 37.

The square root of 12457477 is about 3529.5151225062. The cubic root of 12457477 is about 231.8159769902.

The spelling of 12457477 in words is "twelve million, four hundred fifty-seven thousand, four hundred seventy-seven".