1105530521 has 2 divisors, whose sum is σ = 1105530522. Its totient is φ = 1105530520.

The previous prime is 1105530487. The next prime is 1105530529. The reversal of 1105530521 is 1250355011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102970521 + 2560000 = 33211^2 + 1600^2 .

It is an emirp because it is prime and its reverse (1250355011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1105530521 - 2³⁰ = 31788697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105530529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552765260 + 552765261.

It is an arithmetic number, because the mean of its divisors is an integer number (552765261).

Almost surely, 2^1105530521 is an apocalyptic number.

It is an amenable number.

1105530521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105530521 is an equidigital number, since it uses as much as digits as its factorization.

1105530521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1105530521 is about 33249.5191093044. The cubic root of 1105530521 is about 1034.0072383692.

Adding to 1105530521 its reverse (1250355011), we get a palindrome (2355885532).

The spelling of 1105530521 in words is "one billion, one hundred five million, five hundred thirty thousand, five hundred twenty-one".