1055213161 has 2 divisors, whose sum is σ = 1055213162. Its totient is φ = 1055213160.

The previous prime is 1055213143. The next prime is 1055213177. The reversal of 1055213161 is 1613125501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967210000 + 88003161 = 31100^2 + 9381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055213161 is a prime.

It is a super-2 number, since 2×1055213161² = 2226949630295223842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055213461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527606580 + 527606581.

It is an arithmetic number, because the mean of its divisors is an integer number (527606581).

Almost surely, 2^1055213161 is an apocalyptic number.

It is an amenable number.

1055213161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055213161 is an equidigital number, since it uses as much as digits as its factorization.

1055213161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1055213161 is about 32484.0447142901. The cubic root of 1055213161 is about 1018.0756878815.

Adding to 1055213161 its reverse (1613125501), we get a palindrome (2668338662).

The spelling of 1055213161 in words is "one billion, fifty-five million, two hundred thirteen thousand, one hundred sixty-one".