1061620171 has 2 divisors, whose sum is σ = 1061620172. Its totient is φ = 1061620170.

The previous prime is 1061620121. The next prime is 1061620253. The reversal of 1061620171 is 1710261601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061620171 - 2²¹ = 1059523019 is a prime.

It is a super-2 number, since 2×1061620171² = 2254074774948138482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061620111) 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, 530810085 + 530810086.

It is an arithmetic number, because the mean of its divisors is an integer number (530810086).

Almost surely, 2^1061620171 is an apocalyptic number.

1061620171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061620171 is an equidigital number, since it uses as much as digits as its factorization.

1061620171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1061620171 is about 32582.5132701577. The cubic root of 1061620171 is about 1020.1320382063.

Adding to 1061620171 its reverse (1710261601), we get a palindrome (2771881772).

The spelling of 1061620171 in words is "one billion, sixty-one million, six hundred twenty thousand, one hundred seventy-one".