1040516521 has 4 divisors (see below), whose sum is σ = 1135108944. Its totient is φ = 945924100.

The previous prime is 1040516473. The next prime is 1040516539. The reversal of 1040516521 is 1256150401.

It is a happy number.

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.

It is not a de Polignac number, because 1040516521 - 2¹⁷ = 1040385449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040516591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47296195 + ... + 47296216.

It is an arithmetic number, because the mean of its divisors is an integer number (283777236).

Almost surely, 2^1040516521 is an apocalyptic number.

1040516521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1040516521 is a deficient number, since it is larger than the sum of its proper divisors (94592423).

1040516521 is an equidigital number, since it uses as much as digits as its factorization.

1040516521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94592422.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1040516521 is about 32257.0383172417. The cubic root of 1040516521 is about 1013.3271062228.

Adding to 1040516521 its reverse (1256150401), we get a palindrome (2296666922).

The spelling of 1040516521 in words is "one billion, forty million, five hundred sixteen thousand, five hundred twenty-one".