1055169581 has 2 divisors, whose sum is σ = 1055169582. Its totient is φ = 1055169580.

The previous prime is 1055169559. The next prime is 1055169587. The reversal of 1055169581 is 1859615501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042708681 + 12460900 = 32291^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055169581 - 2⁶ = 1055169517 is a prime.

It is a super-2 number, since 2×1055169581² = 2226765689335431122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055169587) 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, 527584790 + 527584791.

It is an arithmetic number, because the mean of its divisors is an integer number (527584791).

Almost surely, 2^1055169581 is an apocalyptic number.

It is an amenable number.

1055169581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055169581 is an equidigital number, since it uses as much as digits as its factorization.

1055169581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 41.

The square root of 1055169581 is about 32483.3739165130. The cubic root of 1055169581 is about 1018.0616722775.

The spelling of 1055169581 in words is "one billion, fifty-five million, one hundred sixty-nine thousand, five hundred eighty-one".