84000053 has 2 divisors, whose sum is σ = 84000054. Its totient is φ = 84000052.

The previous prime is 84000047. The next prime is 84000073. The reversal of 84000053 is 35000048.

It is an a-pointer prime, because the next prime (84000073) can be obtained adding 84000053 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 9229444 = 8647^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 84000053 - 2¹⁰ = 83999029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83999989 and 84000034.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84000013) 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, 42000026 + 42000027.

It is an arithmetic number, because the mean of its divisors is an integer number (42000027).

Almost surely, 2^84000053 is an apocalyptic number.

It is an amenable number.

84000053 is a deficient number, since it is larger than the sum of its proper divisors (1).

84000053 is an equidigital number, since it uses as much as digits as its factorization.

84000053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 84000053 is about 9165.1542812983. The cubic root of 84000053 is about 437.9520060977.

The spelling of 84000053 in words is "eighty-four million, fifty-three", and thus it is an aban number.