12000551 has 2 divisors, whose sum is σ = 12000552. Its totient is φ = 12000550.

The previous prime is 12000523. The next prime is 12000559. The reversal of 12000551 is 15500021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12000551 - 2¹⁰ = 11999527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000275 + 6000276.

It is an arithmetic number, because the mean of its divisors is an integer number (6000276).

Almost surely, 2^12000551 is an apocalyptic number.

12000551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000551 is an equidigital number, since it uses as much as digits as its factorization.

12000551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 12000551 is about 3464.1811442244. The cubic root of 12000551 is about 228.9463525545.

Adding to 12000551 its reverse (15500021), we get a palindrome (27500572).

The spelling of 12000551 in words is "twelve million, five hundred fifty-one", and thus it is an aban number.