1010045521 has 4 divisors (see below), whose sum is σ = 1016824500. Its totient is φ = 1003266544.

The previous prime is 1010045513. The next prime is 1010045549. The reversal of 1010045521 is 1255400101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95648400 + 914397121 = 9780^2 + 30239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010045521 - 2³ = 1010045513 is a prime.

It is a super-2 number, since 2×1010045521² = 2040383908984322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010045591) 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, 3389266 + ... + 3389563.

It is an arithmetic number, because the mean of its divisors is an integer number (254206125).

Almost surely, 2^1010045521 is an apocalyptic number.

It is an amenable number.

1010045521 is a deficient number, since it is larger than the sum of its proper divisors (6778979).

1010045521 is an equidigital number, since it uses as much as digits as its factorization.

1010045521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778978.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1010045521 is about 31781.2133342955. The cubic root of 1010045521 is about 1003.3373566601.

Adding to 1010045521 its reverse (1255400101), we get a palindrome (2265445622).

The spelling of 1010045521 in words is "one billion, ten million, forty-five thousand, five hundred twenty-one".