550918641 has 32 divisors (see below), whose sum is σ = 928523008. Its totient is φ = 282735360.

The previous prime is 550918637. The next prime is 550918649. The reversal of 550918641 is 146819055.

550918641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 550918641 - 2² = 550918637 is a prime.

It is a super-2 number, since 2×550918641² = 607022698002573762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 550918641.

It is not an unprimeable number, because it can be changed into a prime (550918649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17170 + ... + 37371.

It is an arithmetic number, because the mean of its divisors is an integer number (29016344).

Almost surely, 2^550918641 is an apocalyptic number.

It is an amenable number.

550918641 is a deficient number, since it is larger than the sum of its proper divisors (377604367).

550918641 is a wasteful number, since it uses less digits than its factorization.

550918641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54601.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 550918641 is about 23471.6561196691. The cubic root of 550918641 is about 819.7771757240. Note that the first 3 decimals are identical.

The spelling of 550918641 in words is "five hundred fifty million, nine hundred eighteen thousand, six hundred forty-one".