1143454553 has 8 divisors (see below), whose sum is σ = 1160682600. Its totient is φ = 1126268928.

The previous prime is 1143454541. The next prime is 1143454607. The reversal of 1143454553 is 3554543411.

It can be written as a sum of positive squares in 4 ways, for example, as 244234384 + 899220169 = 15628^2 + 29987^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143454553 - 2¹⁰ = 1143453529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143454513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45953 + ... + 66321.

It is an arithmetic number, because the mean of its divisors is an integer number (145085325).

Almost surely, 2^1143454553 is an apocalyptic number.

It is an amenable number.

1143454553 is a deficient number, since it is larger than the sum of its proper divisors (17228047).

1143454553 is an equidigital number, since it uses as much as digits as its factorization.

1143454553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211.

The product of its digits is 72000, while the sum is 35.

The square root of 1143454553 is about 33815.0048499183. The cubic root of 1143454553 is about 1045.6980609444.

Adding to 1143454553 its reverse (3554543411), we get a palindrome (4697997964).

The spelling of 1143454553 in words is "one billion, one hundred forty-three million, four hundred fifty-four thousand, five hundred fifty-three".