851113 has 2 divisors, whose sum is σ = 851114. Its totient is φ = 851112.

The previous prime is 851093. The next prime is 851117. The reversal of 851113 is 311158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 700569 + 150544 = 837^2 + 388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-851113 is a prime.

It is not a weakly prime, because it can be changed into another prime (851117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425556 + 425557.

It is an arithmetic number, because the mean of its divisors is an integer number (425557).

2⁸⁵¹¹¹³ is an apocalyptic number.

It is an amenable number.

851113 is a deficient number, since it is larger than the sum of its proper divisors (1).

851113 is an equidigital number, since it uses as much as digits as its factorization.

851113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 851113 is about 922.5578572642. The cubic root of 851113 is about 94.7681511581.

The spelling of 851113 in words is "eight hundred fifty-one thousand, one hundred thirteen".