1045355521 has 4 divisors (see below), whose sum is σ = 1194692032. Its totient is φ = 896019012.

The previous prime is 1045355501. The next prime is 1045355527. The reversal of 1045355521 is 1255535401.

1045355521 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.

It is not a de Polignac number, because 1045355521 - 2⁹ = 1045355009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045355527) 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, 74668245 + ... + 74668258.

It is an arithmetic number, because the mean of its divisors is an integer number (298673008).

Almost surely, 2^1045355521 is an apocalyptic number.

It is an amenable number.

1045355521 is a deficient number, since it is larger than the sum of its proper divisors (149336511).

1045355521 is an equidigital number, since it uses as much as digits as its factorization.

1045355521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149336510.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1045355521 is about 32331.9581992802. The cubic root of 1045355521 is about 1014.8955285713.

The spelling of 1045355521 in words is "one billion, forty-five million, three hundred fifty-five thousand, five hundred twenty-one".