12457315 has 16 divisors (see below), whose sum is σ = 16476768. Its totient is φ = 8983296.

The previous prime is 12457309. The next prime is 12457321. The reversal of 12457315 is 51375421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12457309) and next prime (12457321).

It is a cyclic number.

It is not a de Polignac number, because 12457315 - 2³ = 12457307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 567 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (1029798).

Almost surely, 2^12457315 is an apocalyptic number.

12457315 is a deficient number, since it is larger than the sum of its proper divisors (4019453).

12457315 is a wasteful number, since it uses less digits than its factorization.

12457315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518.

The product of its digits is 4200, while the sum is 28.

The square root of 12457315 is about 3529.4921731037. The cubic root of 12457315 is about 231.8149721224.

The spelling of 12457315 in words is "twelve million, four hundred fifty-seven thousand, three hundred fifteen".