1040505541 has 4 divisors (see below), whose sum is σ = 1040779584. Its totient is φ = 1040231500.

The previous prime is 1040505523. The next prime is 1040505551. The reversal of 1040505541 is 1455050401.

It is a happy number.

1040505541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1455050401 = 7 ⋅207864343.

It is a cyclic number.

It is not a de Polignac number, because 1040505541 - 2¹¹ = 1040503493 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 (1040505551) 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, 131245 + ... + 138946.

It is an arithmetic number, because the mean of its divisors is an integer number (260194896).

Almost surely, 2^1040505541 is an apocalyptic number.

It is an amenable number.

1040505541 is a deficient number, since it is larger than the sum of its proper divisors (274043).

1040505541 is an equidigital number, since it uses as much as digits as its factorization.

1040505541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274042.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1040505541 is about 32256.8681213784. The cubic root of 1040505541 is about 1013.3235418486.

Adding to 1040505541 its reverse (1455050401), we get a palindrome (2495555942).

The spelling of 1040505541 in words is "one billion, forty million, five hundred five thousand, five hundred forty-one".