851906051 has 2 divisors, whose sum is σ = 851906052. Its totient is φ = 851906050.

The previous prime is 851905979. The next prime is 851906063. The reversal of 851906051 is 150609158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 851906051 - 2¹⁴ = 851889667 is a prime.

It is not a weakly prime, because it can be changed into another prime (851906851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425953025 + 425953026.

It is an arithmetic number, because the mean of its divisors is an integer number (425953026).

Almost surely, 2^851906051 is an apocalyptic number.

851906051 is a deficient number, since it is larger than the sum of its proper divisors (1).

851906051 is an equidigital number, since it uses as much as digits as its factorization.

851906051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 851906051 is about 29187.4296744335. The cubic root of 851906051 is about 947.9757641112.

The spelling of 851906051 in words is "eight hundred fifty-one million, nine hundred six thousand, fifty-one".