85280515 has 4 divisors (see below), whose sum is σ = 102336624. Its totient is φ = 68224408.

The previous prime is 85280497. The next prime is 85280537. The reversal of 85280515 is 51508258.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51508258 = 2 ⋅25754129.

It is a cyclic number.

It is not a de Polignac number, because 85280515 - 2¹⁷ = 85149443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8528047 + ... + 8528056.

It is an arithmetic number, because the mean of its divisors is an integer number (25584156).

Almost surely, 2^85280515 is an apocalyptic number.

85280515 is a deficient number, since it is larger than the sum of its proper divisors (17056109).

85280515 is a wasteful number, since it uses less digits than its factorization.

85280515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17056108.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 85280515 is about 9234.7449883578. The cubic root of 85280515 is about 440.1661132435.

The spelling of 85280515 in words is "eighty-five million, two hundred eighty thousand, five hundred fifteen".