1045463521 has 4 divisors (see below), whose sum is σ = 1050937344. Its totient is φ = 1039989700.

The previous prime is 1045463519. The next prime is 1045463533. The reversal of 1045463521 is 1253645401.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1253645401 = 2521 ⋅497281.

It is a cyclic number.

It is not a de Polignac number, because 1045463521 - 2¹ = 1045463519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045473521) 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, 2736625 + ... + 2737006.

It is an arithmetic number, because the mean of its divisors is an integer number (262734336).

Almost surely, 2^1045463521 is an apocalyptic number.

It is an amenable number.

1045463521 is a deficient number, since it is larger than the sum of its proper divisors (5473823).

1045463521 is an equidigital number, since it uses as much as digits as its factorization.

1045463521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473822.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1045463521 is about 32333.6283302694. The cubic root of 1045463521 is about 1014.9304783852.

The spelling of 1045463521 in words is "one billion, forty-five million, four hundred sixty-three thousand, five hundred twenty-one".