12551069 has 4 divisors (see below), whose sum is σ = 12562044. Its totient is φ = 12540096.

The previous prime is 12551059. The next prime is 12551101. The reversal of 12551069 is 96015521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11256025 + 1295044 = 3355^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 12551069 - 2⁴ = 12551053 is a prime.

It is a super-2 number, since 2×12551069² = 315058666085522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551009) 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, 3542 + ... + 6135.

It is an arithmetic number, because the mean of its divisors is an integer number (3140511).

Almost surely, 2^12551069 is an apocalyptic number.

It is an amenable number.

12551069 is a deficient number, since it is larger than the sum of its proper divisors (10975).

12551069 is an equidigital number, since it uses as much as digits as its factorization.

12551069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10974.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 12551069 is about 3542.7487915459. The cubic root of 12551069 is about 232.3950673053.

The spelling of 12551069 in words is "twelve million, five hundred fifty-one thousand, sixty-nine".