1055195881 has 2 divisors, whose sum is σ = 1055195882. Its totient is φ = 1055195880.

The previous prime is 1055195857. The next prime is 1055195891. The reversal of 1055195881 is 1885915501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 989731600 + 65464281 = 31460^2 + 8091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055195881 - 2⁷ = 1055195753 is a prime.

It is a super-2 number, since 2×1055195881² = 2226876694558732322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055195851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527597940 + 527597941.

It is an arithmetic number, because the mean of its divisors is an integer number (527597941).

Almost surely, 2^1055195881 is an apocalyptic number.

It is an amenable number.

1055195881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055195881 is an equidigital number, since it uses as much as digits as its factorization.

1055195881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 43.

The square root of 1055195881 is about 32483.7787364709. The cubic root of 1055195881 is about 1018.0701305702.

The spelling of 1055195881 in words is "one billion, fifty-five million, one hundred ninety-five thousand, eight hundred eighty-one".