1011452543 has 4 divisors (see below), whose sum is σ = 1018729320. Its totient is φ = 1004175768.

The previous prime is 1011452539. The next prime is 1011452557. The reversal of 1011452543 is 3452541101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011452543 - 2² = 1011452539 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 (1011452513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638180 + ... + 3638457.

It is an arithmetic number, because the mean of its divisors is an integer number (254682330).

Almost surely, 2^1011452543 is an apocalyptic number.

1011452543 is a deficient number, since it is larger than the sum of its proper divisors (7276777).

1011452543 is an equidigital number, since it uses as much as digits as its factorization.

1011452543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7276776.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1011452543 is about 31803.3416954885. The cubic root of 1011452543 is about 1003.8030329393.

Adding to 1011452543 its reverse (3452541101), we get a palindrome (4463993644).

The spelling of 1011452543 in words is "one billion, eleven million, four hundred fifty-two thousand, five hundred forty-three".