1143504556 has 6 divisors (see below), whose sum is σ = 2001132980. Its totient is φ = 571752276.

The previous prime is 1143504463. The next prime is 1143504559. The reversal of 1143504556 is 6554053411.

It is not an unprimeable number, because it can be changed into a prime (1143504559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142938066 + ... + 142938073.

Almost surely, 2^1143504556 is an apocalyptic number.

It is an amenable number.

1143504556 is a deficient number, since it is larger than the sum of its proper divisors (857628424).

1143504556 is a wasteful number, since it uses less digits than its factorization.

1143504556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285876143 (or 285876141 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1143504556 is about 33815.7442029597. The cubic root of 1143504556 is about 1045.7133034328.

Adding to 1143504556 its reverse (6554053411), we get a palindrome (7697557967).

The spelling of 1143504556 in words is "one billion, one hundred forty-three million, five hundred four thousand, five hundred fifty-six".