12040551 has 12 divisors (see below), whose sum is σ = 17439760. Its totient is φ = 8004960.

The previous prime is 12040537. The next prime is 12040571. The reversal of 12040551 is 15504021.

It is not a de Polignac number, because 12040551 - 2¹⁵ = 12007783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040531) 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, 2046 + ... + 5316.

Almost surely, 2^12040551 is an apocalyptic number.

12040551 is a deficient number, since it is larger than the sum of its proper divisors (5399209).

12040551 is a wasteful number, since it uses less digits than its factorization.

12040551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686 (or 3683 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12040551 is about 3469.9497114512. The cubic root of 12040551 is about 229.2004436091.

Adding to 12040551 its reverse (15504021), we get a palindrome (27544572).

The spelling of 12040551 in words is "twelve million, forty thousand, five hundred fifty-one".