1005223055 has 4 divisors (see below), whose sum is σ = 1206267672. Its totient is φ = 804178440.

The previous prime is 1005223033. The next prime is 1005223057. The reversal of 1005223055 is 5503225001.

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

It is not a de Polignac number, because 1005223055 - 2⁶ = 1005222991 is a prime.

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 1005223055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005223057) 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, 100522301 + ... + 100522310.

It is an arithmetic number, because the mean of its divisors is an integer number (301566918).

Almost surely, 2^1005223055 is an apocalyptic number.

1005223055 is a deficient number, since it is larger than the sum of its proper divisors (201044617).

1005223055 is an equidigital number, since it uses as much as digits as its factorization.

1005223055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201044616.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1005223055 is about 31705.2527982352. The cubic root of 1005223055 is about 1001.7379959535.

Adding to 1005223055 its reverse (5503225001), we get a palindrome (6508448056).

The spelling of 1005223055 in words is "one billion, five million, two hundred twenty-three thousand, fifty-five".