85446457 has 2 divisors, whose sum is σ = 85446458. Its totient is φ = 85446456.

The previous prime is 85446451. The next prime is 85446481. The reversal of 85446457 is 75464458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74028816 + 11417641 = 8604^2 + 3379^2 .

It is a cyclic number.

It is not a de Polignac number, because 85446457 - 2¹⁵ = 85413689 is a prime.

It is not a weakly prime, because it can be changed into another prime (85446451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42723228 + 42723229.

It is an arithmetic number, because the mean of its divisors is an integer number (42723229).

Almost surely, 2^85446457 is an apocalyptic number.

It is an amenable number.

85446457 is a deficient number, since it is larger than the sum of its proper divisors (1).

85446457 is an equidigital number, since it uses as much as digits as its factorization.

85446457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 43.

The square root of 85446457 is about 9243.7252771813. The cubic root of 85446457 is about 440.4514254681.

The spelling of 85446457 in words is "eighty-five million, four hundred forty-six thousand, four hundred fifty-seven".