12315454 has 4 divisors (see below), whose sum is σ = 18473184. Its totient is φ = 6157726.

The previous prime is 12315449. The next prime is 12315461. The reversal of 12315454 is 45451321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12315454² = 303340814452232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078862 + ... + 3078865.

It is an arithmetic number, because the mean of its divisors is an integer number (4618296).

Almost surely, 2^12315454 is an apocalyptic number.

12315454 is a deficient number, since it is larger than the sum of its proper divisors (6157730).

12315454 is an equidigital number, since it uses as much as digits as its factorization.

12315454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157729.

The product of its digits is 2400, while the sum is 25.

The square root of 12315454 is about 3509.3381142318. The cubic root of 12315454 is about 230.9316589748.

Adding to 12315454 its reverse (45451321), we get a palindrome (57766775).

It can be divided in two parts, 12315 and 454, that added together give a square (12769 = 113²).

The spelling of 12315454 in words is "twelve million, three hundred fifteen thousand, four hundred fifty-four".