85448515 has 4 divisors (see below), whose sum is σ = 102538224. Its totient is φ = 68358808.

The previous prime is 85448513. The next prime is 85448527. The reversal of 85448515 is 51584458.

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: 51584458 = 2 ⋅25792229.

It is a cyclic number.

It is not a de Polignac number, because 85448515 - 2¹ = 85448513 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85448513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8544847 + ... + 8544856.

It is an arithmetic number, because the mean of its divisors is an integer number (25634556).

Almost surely, 2^85448515 is an apocalyptic number.

85448515 is a deficient number, since it is larger than the sum of its proper divisors (17089709).

85448515 is a wasteful number, since it uses less digits than its factorization.

85448515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17089708.

The product of its digits is 128000, while the sum is 40.

The square root of 85448515 is about 9243.8365952671. The cubic root of 85448515 is about 440.4549615685.

The spelling of 85448515 in words is "eighty-five million, four hundred forty-eight thousand, five hundred fifteen".