1048455521 has 4 divisors (see below), whose sum is σ = 1048759344. Its totient is φ = 1048151700.

The previous prime is 1048455503. The next prime is 1048455523. The reversal of 1048455521 is 1255548401.

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: 1255548401 = 1213 ⋅1035077.

It is a cyclic number.

It is not a de Polignac number, because 1048455521 - 2²² = 1044261217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1048455523) 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, 146675 + ... + 153656.

It is an arithmetic number, because the mean of its divisors is an integer number (262189836).

Almost surely, 2^1048455521 is an apocalyptic number.

It is an amenable number.

1048455521 is a deficient number, since it is larger than the sum of its proper divisors (303823).

1048455521 is an equidigital number, since it uses as much as digits as its factorization.

1048455521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303822.

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 1048455521 is about 32379.8628934713. The cubic root of 1048455521 is about 1015.8977621642.

The spelling of 1048455521 in words is "one billion, forty-eight million, four hundred fifty-five thousand, five hundred twenty-one".