12049551 has 12 divisors (see below), whose sum is σ = 17511312. Its totient is φ = 7983936.

The previous prime is 12049537. The next prime is 12049559. The reversal of 12049551 is 15594021.

12049551 is a `hidden beast` number, since 120 + 495 + 51 = 666.

12049551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12049551 - 2⁵ = 12049519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12049559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2506 + ... + 5511.

It is an arithmetic number, because the mean of its divisors is an integer number (1459276).

Almost surely, 2^12049551 is an apocalyptic number.

12049551 is a deficient number, since it is larger than the sum of its proper divisors (5461761).

12049551 is a wasteful number, since it uses less digits than its factorization.

12049551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190 (or 8187 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 12049551 is about 3471.2463179671. The cubic root of 12049551 is about 229.2575365179.

The spelling of 12049551 in words is "twelve million, forty-nine thousand, five hundred fifty-one".