12287537 has 2 divisors, whose sum is σ = 12287538. Its totient is φ = 12287536.

The previous prime is 12287533. The next prime is 12287567. The reversal of 12287537 is 73578221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 2825761 = 3076^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 12287537 - 2² = 12287533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12287497 and 12287506.

It is not a weakly prime, because it can be changed into another prime (12287531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6143768 + 6143769.

It is an arithmetic number, because the mean of its divisors is an integer number (6143769).

Almost surely, 2^12287537 is an apocalyptic number.

It is an amenable number.

12287537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12287537 is an equidigital number, since it uses as much as digits as its factorization.

12287537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 12287537 is about 3505.3583269047. The cubic root of 12287537 is about 230.7570329422.

The spelling of 12287537 in words is "twelve million, two hundred eighty-seven thousand, five hundred thirty-seven".