1143324557 has 4 divisors (see below), whose sum is σ = 1144659516. Its totient is φ = 1141989600.

The previous prime is 1143324541. The next prime is 1143324571. The reversal of 1143324557 is 7554233411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7554233411 = 4933 ⋅1531367.

It can be written as a sum of positive squares in 2 ways, for example, as 867066916 + 276257641 = 29446^2 + 16621^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143324557 - 2⁴ = 1143324541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143324157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666194 + ... + 667907.

It is an arithmetic number, because the mean of its divisors is an integer number (286164879).

Almost surely, 2^1143324557 is an apocalyptic number.

It is an amenable number.

1143324557 is a deficient number, since it is larger than the sum of its proper divisors (1334959).

1143324557 is an equidigital number, since it uses as much as digits as its factorization.

1143324557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334958.

The product of its digits is 50400, while the sum is 35.

The square root of 1143324557 is about 33813.0826308398. The cubic root of 1143324557 is about 1045.6584319924.

Adding to 1143324557 its reverse (7554233411), we get a palindrome (8697557968).

The spelling of 1143324557 in words is "one billion, one hundred forty-three million, three hundred twenty-four thousand, five hundred fifty-seven".