12906551 has 6 divisors (see below), whose sum is σ = 15013800. Its totient is φ = 11062716.

The previous prime is 12906541. The next prime is 12906559. The reversal of 12906551 is 15560921.

12906551 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12906551 - 2¹⁰ = 12905527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131651 + ... + 131748.

It is an arithmetic number, because the mean of its divisors is an integer number (2502300).

Almost surely, 2^12906551 is an apocalyptic number.

12906551 is a deficient number, since it is larger than the sum of its proper divisors (2107249).

12906551 is an equidigital number, since it uses as much as digits as its factorization.

12906551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263413 (or 263406 counting only the distinct ones).

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

The square root of 12906551 is about 3592.5688580736. The cubic root of 12906551 is about 234.5687034159.

The spelling of 12906551 in words is "twelve million, nine hundred six thousand, five hundred fifty-one".