12705051 has 4 divisors (see below), whose sum is σ = 16940072. Its totient is φ = 8470032.

The previous prime is 12705041. The next prime is 12705061. The reversal of 12705051 is 15050721.

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

It is an interprime number because it is at equal distance from previous prime (12705041) and next prime (12705061).

It is not a de Polignac number, because 12705051 - 2¹¹ = 12703003 is a prime.

It is a super-2 number, since 2×12705051² = 322836641825202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12705031) by changing a digit.

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, 2117506 + ... + 2117511.

It is an arithmetic number, because the mean of its divisors is an integer number (4235018).

Almost surely, 2^12705051 is an apocalyptic number.

12705051 is a deficient number, since it is larger than the sum of its proper divisors (4235021).

12705051 is an equidigital number, since it uses as much as digits as its factorization.

12705051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235020.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 12705051 is about 3564.4145381816. The cubic root of 12705051 is about 233.3415817946.

Adding to 12705051 its reverse (15050721), we get a palindrome (27755772).

The spelling of 12705051 in words is "twelve million, seven hundred five thousand, fifty-one".