1116505553 has 2 divisors, whose sum is σ = 1116505554. Its totient is φ = 1116505552.

The previous prime is 1116505547. The next prime is 1116505561. The reversal of 1116505553 is 3555056111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 646786624 + 469718929 = 25432^2 + 21673^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116505553 - 2¹² = 1116501457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116505543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558252776 + 558252777.

It is an arithmetic number, because the mean of its divisors is an integer number (558252777).

Almost surely, 2^1116505553 is an apocalyptic number.

It is an amenable number.

1116505553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116505553 is an equidigital number, since it uses as much as digits as its factorization.

1116505553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 1116505553 is about 33414.1519868453. The cubic root of 1116505553 is about 1037.4176418488.

The spelling of 1116505553 in words is "one billion, one hundred sixteen million, five hundred five thousand, five hundred fifty-three".