85481519 has 2 divisors, whose sum is σ = 85481520. Its totient is φ = 85481518.

The previous prime is 85481509. The next prime is 85481521. The reversal of 85481519 is 91518458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85481519 - 2⁴ = 85481503 is a prime.

It is a super-2 number, since 2×85481519² = 14614180181094722, which contains 22 as substring.

Together with 85481521, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85481509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42740759 + 42740760.

It is an arithmetic number, because the mean of its divisors is an integer number (42740760).

Almost surely, 2^85481519 is an apocalyptic number.

85481519 is a deficient number, since it is larger than the sum of its proper divisors (1).

85481519 is an equidigital number, since it uses as much as digits as its factorization.

85481519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 41.

The square root of 85481519 is about 9245.6216124174. The cubic root of 85481519 is about 440.5116620053.

The spelling of 85481519 in words is "eighty-five million, four hundred eighty-one thousand, five hundred nineteen".