1050544721 has 4 divisors (see below), whose sum is σ = 1053113700. Its totient is φ = 1047975744.

The previous prime is 1050544717. The next prime is 1050544753. The reversal of 1050544721 is 1274450501.

1050544721 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.

It can be written as a sum of positive squares in 2 ways, for example, as 896164096 + 154380625 = 29936^2 + 12425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050544721 - 2² = 1050544717 is a prime.

It is a super-2 number, since 2×1050544721² = 2207288421641935682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1050544321) 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, 1283876 + ... + 1284693.

It is an arithmetic number, because the mean of its divisors is an integer number (263278425).

Almost surely, 2^1050544721 is an apocalyptic number.

It is an amenable number.

1050544721 is a deficient number, since it is larger than the sum of its proper divisors (2568979).

1050544721 is an equidigital number, since it uses as much as digits as its factorization.

1050544721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568978.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1050544721 is about 32412.1076297115. The cubic root of 1050544721 is about 1016.5720891088.

The spelling of 1050544721 in words is "one billion, fifty million, five hundred forty-four thousand, seven hundred twenty-one".