1055531205 has 24 divisors (see below), whose sum is σ = 1848456792. Its totient is φ = 557144064.

The previous prime is 1055531137. The next prime is 1055531219. The reversal of 1055531205 is 5021355501.

1055531205 is a `hidden beast` number, since 105 + 5 + 531 + 20 + 5 = 666.

1055531205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 80030916 + 975500289 = 8946^2 + 31233^2 .

It is not a de Polignac number, because 1055531205 - 2¹⁰ = 1055530181 is a prime.

It is a super-2 number, since 2×1055531205² = 2228292249457504050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116544 + ... + 125273.

It is an arithmetic number, because the mean of its divisors is an integer number (77019033).

Almost surely, 2^1055531205 is an apocalyptic number.

1055531205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055531205 is a deficient number, since it is larger than the sum of its proper divisors (792925587).

1055531205 is a wasteful number, since it uses less digits than its factorization.

1055531205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241925 (or 241922 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 1055531205 is about 32488.9397333923. The cubic root of 1055531205 is about 1018.1779611633.

Adding to 1055531205 its reverse (5021355501), we get a palindrome (6076886706).

The spelling of 1055531205 in words is "one billion, fifty-five million, five hundred thirty-one thousand, two hundred five".