6851129 has 2 divisors, whose sum is σ = 6851130. Its totient is φ = 6851128.

The previous prime is 6851113. The next prime is 6851149. The reversal of 6851129 is 9211586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3892729 + 2958400 = 1973^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 6851129 - 2⁴ = 6851113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6851095 and 6851104.

It is not a weakly prime, because it can be changed into another prime (6851149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3425564 + 3425565.

It is an arithmetic number, because the mean of its divisors is an integer number (3425565).

Almost surely, 2^6851129 is an apocalyptic number.

It is an amenable number.

6851129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6851129 is an equidigital number, since it uses as much as digits as its factorization.

6851129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 32.

The square root of 6851129 is about 2617.4661411373. The cubic root of 6851129 is about 189.9272944350.

The spelling of 6851129 in words is "six million, eight hundred fifty-one thousand, one hundred twenty-nine".