84442051 has 2 divisors, whose sum is σ = 84442052. Its totient is φ = 84442050.

The previous prime is 84442049. The next prime is 84442063. The reversal of 84442051 is 15024448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84442051 - 2¹ = 84442049 is a prime.

Together with 84442049, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84442021) 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, 42221025 + 42221026.

It is an arithmetic number, because the mean of its divisors is an integer number (42221026).

Almost surely, 2^84442051 is an apocalyptic number.

84442051 is a deficient number, since it is larger than the sum of its proper divisors (1).

84442051 is an equidigital number, since it uses as much as digits as its factorization.

84442051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 84442051 is about 9189.2356047715. The cubic root of 84442051 is about 438.7188126738.

Adding to 84442051 its reverse (15024448), we get a palindrome (99466499).

The spelling of 84442051 in words is "eighty-four million, four hundred forty-two thousand, fifty-one".