12522819 has 4 divisors (see below), whose sum is σ = 16697096. Its totient is φ = 8348544.

The previous prime is 12522803. The next prime is 12522841. The reversal of 12522819 is 91822521.

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

It is not a de Polignac number, because 12522819 - 2⁴ = 12522803 is a prime.

It is a super-4 number, since 4×12522819⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12522869) 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, 2087134 + ... + 2087139.

It is an arithmetic number, because the mean of its divisors is an integer number (4174274).

Almost surely, 2^12522819 is an apocalyptic number.

12522819 is a deficient number, since it is larger than the sum of its proper divisors (4174277).

12522819 is an equidigital number, since it uses as much as digits as its factorization.

12522819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174276.

The product of its digits is 2880, while the sum is 30.

The square root of 12522819 is about 3538.7595284224. The cubic root of 12522819 is about 232.2205777207.

The spelling of 12522819 in words is "twelve million, five hundred twenty-two thousand, eight hundred nineteen".