12775019 has 4 divisors (see below), whose sum is σ = 12789840. Its totient is φ = 12760200.

The previous prime is 12775013. The next prime is 12775031. The reversal of 12775019 is 91057721.

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

It is a cyclic number.

It is not a de Polignac number, because 12775019 - 2⁴ = 12775003 is a prime.

It is a super-2 number, since 2×12775019² = 326402220900722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12775013) 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, 6032 + ... + 7869.

It is an arithmetic number, because the mean of its divisors is an integer number (3197460).

Almost surely, 2^12775019 is an apocalyptic number.

12775019 is a deficient number, since it is larger than the sum of its proper divisors (14821).

12775019 is an equidigital number, since it uses as much as digits as its factorization.

12775019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14820.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 12775019 is about 3574.2158580589. The cubic root of 12775019 is about 233.7691431032.

The spelling of 12775019 in words is "twelve million, seven hundred seventy-five thousand, nineteen".