80862851 has 2 divisors, whose sum is σ = 80862852. Its totient is φ = 80862850.

The previous prime is 80862839. The next prime is 80862857. The reversal of 80862851 is 15826808.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80862851 is a prime.

It is a super-3 number, since 3×80862851³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80862857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40431425 + 40431426.

It is an arithmetic number, because the mean of its divisors is an integer number (40431426).

Almost surely, 2^80862851 is an apocalyptic number.

80862851 is a deficient number, since it is larger than the sum of its proper divisors (1).

80862851 is an equidigital number, since it uses as much as digits as its factorization.

80862851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 80862851 is about 8992.3773830951. The cubic root of 80862851 is about 432.4305317943.

The spelling of 80862851 in words is "eighty million, eight hundred sixty-two thousand, eight hundred fifty-one".