5581039655 has 16 divisors (see below), whose sum is σ = 6826659264. Its totient is φ = 4378632960.

The previous prime is 5581039601. The next prime is 5581039661. The reversal of 5581039655 is 5569301855.

It is a happy number.

It is not a de Polignac number, because 5581039655 - 2⁶ = 5581039591 is a prime.

It is a super-2 number, since 2×5581039655² = 62296007261365038050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 969947 + ... + 975683.

It is an arithmetic number, because the mean of its divisors is an integer number (426666204).

Almost surely, 2^5581039655 is an apocalyptic number.

5581039655 is a deficient number, since it is larger than the sum of its proper divisors (1245619609).

5581039655 is a wasteful number, since it uses less digits than its factorization.

5581039655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466.

The product of its (nonzero) digits is 810000, while the sum is 47.

The square root of 5581039655 is about 74706.3561887474. The cubic root of 5581039655 is about 1773.8015746963.

The spelling of 5581039655 in words is "five billion, five hundred eighty-one million, thirty-nine thousand, six hundred fifty-five".