84731851 has 2 divisors, whose sum is σ = 84731852. Its totient is φ = 84731850.

The previous prime is 84731833. The next prime is 84731861. The reversal of 84731851 is 15813748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84731851 - 2⁵ = 84731819 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84731851.

It is not a weakly prime, because it can be changed into another prime (84731831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42365925 + 42365926.

It is an arithmetic number, because the mean of its divisors is an integer number (42365926).

Almost surely, 2^84731851 is an apocalyptic number.

84731851 is a deficient number, since it is larger than the sum of its proper divisors (1).

84731851 is an equidigital number, since it uses as much as digits as its factorization.

84731851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 84731851 is about 9204.9905486100. The cubic root of 84731851 is about 439.2201250755.

The spelling of 84731851 in words is "eighty-four million, seven hundred thirty-one thousand, eight hundred fifty-one".