1052241521 has 4 divisors (see below), whose sum is σ = 1069491444. Its totient is φ = 1034991600.

The previous prime is 1052241517. The next prime is 1052241523. The reversal of 1052241521 is 1251422501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1251422501 = 7 ⋅178774643.

It can be written as a sum of positive squares in 2 ways, for example, as 462723121 + 589518400 = 21511^2 + 24280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052241521 - 2² = 1052241517 is a prime.

It is a super-2 number, since 2×1052241521² = 2214424437032786882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052241523) 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, 8624870 + ... + 8624991.

It is an arithmetic number, because the mean of its divisors is an integer number (267372861).

Almost surely, 2^1052241521 is an apocalyptic number.

It is an amenable number.

1052241521 is a deficient number, since it is larger than the sum of its proper divisors (17249923).

1052241521 is an equidigital number, since it uses as much as digits as its factorization.

1052241521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17249922.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1052241521 is about 32438.2724724977. The cubic root of 1052241521 is about 1017.1191042727.

The spelling of 1052241521 in words is "one billion, fifty-two million, two hundred forty-one thousand, five hundred twenty-one".