550155944 has 64 divisors (see below), whose sum is σ = 1173883200. Its totient is φ = 239625216.

The previous prime is 550155919. The next prime is 550155971. The reversal of 550155944 is 449551055.

It is a super-2 number, since 2×550155944² = 605343125437062272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 550155898 and 550155907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855287 + ... + 855929.

It is an arithmetic number, because the mean of its divisors is an integer number (18341925).

Almost surely, 2^550155944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550155944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586941600).

550155944 is an abundant number, since it is smaller than the sum of its proper divisors (623727256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550155944 is a wasteful number, since it uses less digits than its factorization.

550155944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 550155944 is about 23455.4033007322. The cubic root of 550155944 is about 819.3986985780.

The spelling of 550155944 in words is "five hundred fifty million, one hundred fifty-five thousand, nine hundred forty-four".