1055521211 has 4 divisors (see below), whose sum is σ = 1117610712. Its totient is φ = 993431712.

The previous prime is 1055521189. The next prime is 1055521213. The reversal of 1055521211 is 1121255501.

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

It is a cyclic number.

It is not a de Polignac number, because 1055521211 - 2⁶ = 1055521147 is a prime.

It is a super-2 number, since 2×1055521211² = 2228250053741813042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055521213) 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, 31044725 + ... + 31044758.

It is an arithmetic number, because the mean of its divisors is an integer number (279402678).

Almost surely, 2^1055521211 is an apocalyptic number.

1055521211 is a deficient number, since it is larger than the sum of its proper divisors (62089501).

1055521211 is an equidigital number, since it uses as much as digits as its factorization.

1055521211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62089500.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1055521211 is about 32488.7859268394. The cubic root of 1055521211 is about 1018.1747477093.

Adding to 1055521211 its reverse (1121255501), we get a palindrome (2176776712).

The spelling of 1055521211 in words is "one billion, fifty-five million, five hundred twenty-one thousand, two hundred eleven".