84557311 has 2 divisors, whose sum is σ = 84557312. Its totient is φ = 84557310.

The previous prime is 84557299. The next prime is 84557377. The reversal of 84557311 is 11375548.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84557311 - 2⁵ = 84557279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84557911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42278655 + 42278656.

It is an arithmetic number, because the mean of its divisors is an integer number (42278656).

Almost surely, 2^84557311 is an apocalyptic number.

84557311 is a deficient number, since it is larger than the sum of its proper divisors (1).

84557311 is an equidigital number, since it uses as much as digits as its factorization.

84557311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 34.

The square root of 84557311 is about 9195.5049344775. The cubic root of 84557311 is about 438.9183330944.

The spelling of 84557311 in words is "eighty-four million, five hundred fifty-seven thousand, three hundred eleven".