84108553 has 2 divisors, whose sum is σ = 84108554. Its totient is φ = 84108552.

The previous prime is 84108533. The next prime is 84108599. The reversal of 84108553 is 35580148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59028489 + 25080064 = 7683^2 + 5008^2 .

It is a cyclic number.

It is not a de Polignac number, because 84108553 - 2²⁵ = 50554121 is a prime.

It is not a weakly prime, because it can be changed into another prime (84108523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42054276 + 42054277.

It is an arithmetic number, because the mean of its divisors is an integer number (42054277).

Almost surely, 2^84108553 is an apocalyptic number.

It is an amenable number.

84108553 is a deficient number, since it is larger than the sum of its proper divisors (1).

84108553 is an equidigital number, since it uses as much as digits as its factorization.

84108553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 84108553 is about 9171.0715295433. The cubic root of 84108553 is about 438.1404875196.

The spelling of 84108553 in words is "eighty-four million, one hundred eight thousand, five hundred fifty-three".