1043045561 has 8 divisors (see below), whose sum is σ = 1123505664. Its totient is φ = 965511360.

The previous prime is 1043045543. The next prime is 1043045579. The reversal of 1043045561 is 1655403401.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1043045543) and next prime (1043045579).

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 1043045561 - 2¹⁴ = 1043029177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043045501) 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, 730736 + ... + 732161.

It is an arithmetic number, because the mean of its divisors is an integer number (140438208).

Almost surely, 2^1043045561 is an apocalyptic number.

It is an amenable number.

1043045561 is a deficient number, since it is larger than the sum of its proper divisors (80460103).

1043045561 is a wasteful number, since it uses less digits than its factorization.

1043045561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462951.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1043045561 is about 32296.2158928875. The cubic root of 1043045561 is about 1014.1474267811.

Adding to 1043045561 its reverse (1655403401), we get a palindrome (2698448962).

The spelling of 1043045561 in words is "one billion, forty-three million, forty-five thousand, five hundred sixty-one".