85513459 has 2 divisors, whose sum is σ = 85513460. Its totient is φ = 85513458.

The previous prime is 85513457. The next prime is 85513487. The reversal of 85513459 is 95431558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85513459 - 2¹ = 85513457 is a prime.

Together with 85513457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85513457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42756729 + 42756730.

It is an arithmetic number, because the mean of its divisors is an integer number (42756730).

Almost surely, 2^85513459 is an apocalyptic number.

85513459 is a deficient number, since it is larger than the sum of its proper divisors (1).

85513459 is an equidigital number, since it uses as much as digits as its factorization.

85513459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

The square root of 85513459 is about 9247.3487551838. The cubic root of 85513459 is about 440.5665206095.

The spelling of 85513459 in words is "eighty-five million, five hundred thirteen thousand, four hundred fifty-nine".