12251567 has 2 divisors, whose sum is σ = 12251568. Its totient is φ = 12251566.

The previous prime is 12251549. The next prime is 12251581. The reversal of 12251567 is 76515221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12251567 - 2¹⁰ = 12250543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12251587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125783 + 6125784.

It is an arithmetic number, because the mean of its divisors is an integer number (6125784).

Almost surely, 2^12251567 is an apocalyptic number.

12251567 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251567 is an equidigital number, since it uses as much as digits as its factorization.

12251567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 29.

The square root of 12251567 is about 3500.2238499845. The cubic root of 12251567 is about 230.5316435086.

Adding to 12251567 its reverse (76515221), we get a palindrome (88766788).

The spelling of 12251567 in words is "twelve million, two hundred fifty-one thousand, five hundred sixty-seven".