1143587 has 2 divisors, whose sum is σ = 1143588. Its totient is φ = 1143586.

The previous prime is 1143577. The next prime is 1143589. The reversal of 1143587 is 7853411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1143587 - 2¹² = 1139491 is a prime.

Together with 1143589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1143589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571793 + 571794.

It is an arithmetic number, because the mean of its divisors is an integer number (571794).

2^1143587 is an apocalyptic number.

1143587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143587 is an equidigital number, since it uses as much as digits as its factorization.

1143587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 1143587 is about 1069.3862725882. The cubic root of 1143587 is about 104.5738433989.

Adding to 1143587 its reverse (7853411), we get a palindrome (8996998).

The spelling of 1143587 in words is "one million, one hundred forty-three thousand, five hundred eighty-seven".