1105521551 has 2 divisors, whose sum is σ = 1105521552. Its totient is φ = 1105521550.

The previous prime is 1105521511. The next prime is 1105521569. The reversal of 1105521551 is 1551255011.

It is a strong prime.

It is an emirp because it is prime and its reverse (1551255011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105521551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1105521551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105521511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552760775 + 552760776.

It is an arithmetic number, because the mean of its divisors is an integer number (552760776).

Almost surely, 2^1105521551 is an apocalyptic number.

1105521551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105521551 is an equidigital number, since it uses as much as digits as its factorization.

1105521551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1250, while the sum is 26.

The square root of 1105521551 is about 33249.3842198619. The cubic root of 1105521551 is about 1034.0044418023.

Adding to 1105521551 its reverse (1551255011), we get a palindrome (2656776562).

The spelling of 1105521551 in words is "one billion, one hundred five million, five hundred twenty-one thousand, five hundred fifty-one".