5605530781 has 2 divisors, whose sum is σ = 5605530782. Its totient is φ = 5605530780.

The previous prime is 5605530739. The next prime is 5605530797. The reversal of 5605530781 is 1870355065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4268531556 + 1336999225 = 65334^2 + 36565^2 .

It is a cyclic number.

It is not a de Polignac number, because 5605530781 - 2⁷ = 5605530653 is a prime.

It is a super-2 number, since 2×5605530781² = 62843950673476939922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5605530481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802765390 + 2802765391.

It is an arithmetic number, because the mean of its divisors is an integer number (2802765391).

Almost surely, 2^5605530781 is an apocalyptic number.

It is an amenable number.

5605530781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5605530781 is an equidigital number, since it uses as much as digits as its factorization.

5605530781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 5605530781 is about 74870.0927006238. The cubic root of 5605530781 is about 1776.3924304814.

The spelling of 5605530781 in words is "five billion, six hundred five million, five hundred thirty thousand, seven hundred eighty-one".