12161587 has 2 divisors, whose sum is σ = 12161588. Its totient is φ = 12161586.

The previous prime is 12161573. The next prime is 12161599. The reversal of 12161587 is 78516121.

12161587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12161587 - 2⁷ = 12161459 is a prime.

It is not a weakly prime, because it can be changed into another prime (12161287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6080793 + 6080794.

It is an arithmetic number, because the mean of its divisors is an integer number (6080794).

Almost surely, 2^12161587 is an apocalyptic number.

12161587 is a deficient number, since it is larger than the sum of its proper divisors (1).

12161587 is an equidigital number, since it uses as much as digits as its factorization.

12161587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 31.

The square root of 12161587 is about 3487.3466991396. The cubic root of 12161587 is about 229.9658865600.

The spelling of 12161587 in words is "twelve million, one hundred sixty-one thousand, five hundred eighty-seven".