1055222165 has 4 divisors (see below), whose sum is σ = 1266266604. Its totient is φ = 844177728.

The previous prime is 1055222143. The next prime is 1055222173. The reversal of 1055222165 is 5612225501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 318479716 + 736742449 = 17846^2 + 27143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055222165 is a prime.

It is a super-2 number, since 2×1055222165² = 2226987635014574450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105522212 + ... + 105522221.

It is an arithmetic number, because the mean of its divisors is an integer number (316566651).

Almost surely, 2^1055222165 is an apocalyptic number.

It is an amenable number.

1055222165 is a deficient number, since it is larger than the sum of its proper divisors (211044439).

1055222165 is an equidigital number, since it uses as much as digits as its factorization.

1055222165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211044438.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1055222165 is about 32484.1833051102. The cubic root of 1055222165 is about 1018.0785835768.

Adding to 1055222165 its reverse (5612225501), we get a palindrome (6667447666).

The spelling of 1055222165 in words is "one billion, fifty-five million, two hundred twenty-two thousand, one hundred sixty-five".