12504477 has 4 divisors (see below), whose sum is σ = 16672640. Its totient is φ = 8336316.

The previous prime is 12504473. The next prime is 12504497. The reversal of 12504477 is 77440521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12504477 - 2² = 12504473 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 (12504473) 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, 2084077 + ... + 2084082.

It is an arithmetic number, because the mean of its divisors is an integer number (4168160).

Almost surely, 2^12504477 is an apocalyptic number.

It is an amenable number.

12504477 is a deficient number, since it is larger than the sum of its proper divisors (4168163).

12504477 is an equidigital number, since it uses as much as digits as its factorization.

12504477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168162.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 12504477 is about 3536.1669926631. The cubic root of 12504477 is about 232.1071455644.

Adding to 12504477 its reverse (77440521), we get a palindrome (89944998).

The spelling of 12504477 in words is "twelve million, five hundred four thousand, four hundred seventy-seven".