12615055 has 4 divisors (see below), whose sum is σ = 15138072. Its totient is φ = 10092040.

The previous prime is 12614999. The next prime is 12615073. The reversal of 12615055 is 55051621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55051621 = 5419 ⋅10159.

It is not a de Polignac number, because 12615055 - 2¹⁷ = 12483983 is a prime.

It is a super-2 number, since 2×12615055² = 318279225306050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1261501 + ... + 1261510.

It is an arithmetic number, because the mean of its divisors is an integer number (3784518).

Almost surely, 2^12615055 is an apocalyptic number.

12615055 is a deficient number, since it is larger than the sum of its proper divisors (2523017).

12615055 is an equidigital number, since it uses as much as digits as its factorization.

12615055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523016.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 12615055 is about 3551.7678696672. The cubic root of 12615055 is about 232.7893187886.

Adding to 12615055 its reverse (55051621), we get a palindrome (67666676).

The spelling of 12615055 in words is "twelve million, six hundred fifteen thousand, fifty-five".