85214491 has 2 divisors, whose sum is σ = 85214492. Its totient is φ = 85214490.

The previous prime is 85214483. The next prime is 85214509. The reversal of 85214491 is 19441258.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85214491 - 2³ = 85214483 is a prime.

It is not a weakly prime, because it can be changed into another prime (85214291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42607245 + 42607246.

It is an arithmetic number, because the mean of its divisors is an integer number (42607246).

Almost surely, 2^85214491 is an apocalyptic number.

85214491 is a deficient number, since it is larger than the sum of its proper divisors (1).

85214491 is an equidigital number, since it uses as much as digits as its factorization.

85214491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 85214491 is about 9231.1695358714. The cubic root of 85214491 is about 440.0524920157.

The spelling of 85214491 in words is "eighty-five million, two hundred fourteen thousand, four hundred ninety-one".