1145034521 has 4 divisors (see below), whose sum is σ = 1184518500. Its totient is φ = 1105550544.

The previous prime is 1145034503. The next prime is 1145034529. The reversal of 1145034521 is 1254305411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 483516121 + 661518400 = 21989^2 + 25720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145034521 - 2¹⁰ = 1145033497 is a prime.

It is a super-2 number, since 2×1145034521² = 2622208108563398882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145034529) 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, 19741946 + ... + 19742003.

It is an arithmetic number, because the mean of its divisors is an integer number (296129625).

Almost surely, 2^1145034521 is an apocalyptic number.

It is an amenable number.

1145034521 is a deficient number, since it is larger than the sum of its proper divisors (39483979).

1145034521 is an equidigital number, since it uses as much as digits as its factorization.

1145034521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39483978.

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

The square root of 1145034521 is about 33838.3587220184. The cubic root of 1145034521 is about 1046.1794702818.

Adding to 1145034521 its reverse (1254305411), we get a palindrome (2399339932).

The spelling of 1145034521 in words is "one billion, one hundred forty-five million, thirty-four thousand, five hundred twenty-one".