1061881 has 2 divisors, whose sum is σ = 1061882. Its totient is φ = 1061880.

The previous prime is 1061869. The next prime is 1061897. The reversal of 1061881 is 1881601.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 885481 + 176400 = 941^2 + 420^2 .

It is an emirp because it is prime and its reverse (1881601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1061881 - 2⁵ = 1061849 is a prime.

It is a super-2 number, since 2×1061881² = 2255182516322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530940 + 530941.

It is an arithmetic number, because the mean of its divisors is an integer number (530941).

2^1061881 is an apocalyptic number.

It is an amenable number.

1061881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061881 is an equidigital number, since it uses as much as digits as its factorization.

1061881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 1061881 is about 1030.4761035560. The cubic root of 1061881 is about 102.0215576631.

The spelling of 1061881 in words is "one million, sixty-one thousand, eight hundred eighty-one".