5543135581 has 2 divisors, whose sum is σ = 5543135582. Its totient is φ = 5543135580.

The previous prime is 5543135537. The next prime is 5543135627. The reversal of 5543135581 is 1855313455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5467271481 + 75864100 = 73941^2 + 8710^2 .

It is a cyclic number.

It is not a de Polignac number, because 5543135581 - 2¹⁹ = 5542611293 is a prime.

It is a super-2 number, since 2×5543135581² = 61452704138696415122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5543135531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2771567790 + 2771567791.

It is an arithmetic number, because the mean of its divisors is an integer number (2771567791).

Almost surely, 2^5543135581 is an apocalyptic number.

It is an amenable number.

5543135581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5543135581 is an equidigital number, since it uses as much as digits as its factorization.

5543135581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180000, while the sum is 40.

The square root of 5543135581 is about 74452.2369106530. The cubic root of 5543135581 is about 1769.7768113147.

The spelling of 5543135581 in words is "five billion, five hundred forty-three million, one hundred thirty-five thousand, five hundred eighty-one".