6851249 has 2 divisors, whose sum is σ = 6851250. Its totient is φ = 6851248.

The previous prime is 6851239. The next prime is 6851261. The reversal of 6851249 is 9421586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 384400 = 2543^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 6851249 - 2¹² = 6847153 is a prime.

It is a super-2 number, since 2×6851249² = 93879225720002, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6851239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3425624 + 3425625.

It is an arithmetic number, because the mean of its divisors is an integer number (3425625).

Almost surely, 2^6851249 is an apocalyptic number.

It is an amenable number.

6851249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6851249 is an equidigital number, since it uses as much as digits as its factorization.

6851249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 6851249 is about 2617.4890639695. The cubic root of 6851249 is about 189.9284033102.

The spelling of 6851249 in words is "six million, eight hundred fifty-one thousand, two hundred forty-nine".