550144555 has 4 divisors (see below), whose sum is σ = 660173472. Its totient is φ = 440115640.

The previous prime is 550144549. The next prime is 550144559. The reversal of 550144555 is 555441055.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 550144555 - 2³ = 550144547 is a prime.

It is a super-2 number, since 2×550144555² = 605318062792296050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550144555.

It is not an unprimeable number, because it can be changed into a prime (550144559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55014451 + ... + 55014460.

It is an arithmetic number, because the mean of its divisors is an integer number (165043368).

Almost surely, 2^550144555 is an apocalyptic number.

550144555 is a deficient number, since it is larger than the sum of its proper divisors (110028917).

550144555 is a wasteful number, since it uses less digits than its factorization.

550144555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110028916.

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 550144555 is about 23455.1605195957. The cubic root of 550144555 is about 819.3930443047.

The spelling of 550144555 in words is "five hundred fifty million, one hundred forty-four thousand, five hundred fifty-five".