85454861 has 2 divisors, whose sum is σ = 85454862. Its totient is φ = 85454860.

The previous prime is 85454843. The next prime is 85454881. The reversal of 85454861 is 16845458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58216900 + 27237961 = 7630^2 + 5219^2 .

It is a cyclic number.

It is not a de Polignac number, because 85454861 - 2¹⁴ = 85438477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4968662 and since 85454861 and 4968662 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85454881) 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, 42727430 + 42727431.

It is an arithmetic number, because the mean of its divisors is an integer number (42727431).

Almost surely, 2^85454861 is an apocalyptic number.

It is an amenable number.

85454861 is a deficient number, since it is larger than the sum of its proper divisors (1).

85454861 is an equidigital number, since it uses as much as digits as its factorization.

85454861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153600, while the sum is 41.

The square root of 85454861 is about 9244.1798446374. The cubic root of 85454861 is about 440.4658650464.

The spelling of 85454861 in words is "eighty-five million, four hundred fifty-four thousand, eight hundred sixty-one".