550550000581 has 16 divisors (see below), whose sum is σ = 656853629184. Its totient is φ = 451178348544.

The previous prime is 550550000579. The next prime is 550550000597. The reversal of 550550000581 is 185000055055.

It is a happy number.

It is not a de Polignac number, because 550550000581 - 2¹ = 550550000579 is a prime.

It is a super-2 number, since 2×550550000581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550550000521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416316 + ... + 1128901.

It is an arithmetic number, because the mean of its divisors is an integer number (41053351824).

Almost surely, 2^550550000581 is an apocalyptic number.

It is an amenable number.

550550000581 is a deficient number, since it is larger than the sum of its proper divisors (106303628603).

550550000581 is a wasteful number, since it uses less digits than its factorization.

550550000581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547460.

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 550550000581 in words is "five hundred fifty billion, five hundred fifty million, five hundred eighty-one", and thus it is an aban number.