85120507 has 4 divisors (see below), whose sum is σ = 85998136. Its totient is φ = 84242880.

The previous prime is 85120489. The next prime is 85120517. The reversal of 85120507 is 70502158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70502158 = 2 ⋅35251079.

It is a cyclic number.

It is not a de Polignac number, because 85120507 - 2¹¹ = 85118459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85120517) 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, 438669 + ... + 438862.

It is an arithmetic number, because the mean of its divisors is an integer number (21499534).

Almost surely, 2^85120507 is an apocalyptic number.

85120507 is a deficient number, since it is larger than the sum of its proper divisors (877629).

85120507 is an equidigital number, since it uses as much as digits as its factorization.

85120507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877628.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 85120507 is about 9226.0775522429. The cubic root of 85120507 is about 439.8906529242.

The spelling of 85120507 in words is "eighty-five million, one hundred twenty thousand, five hundred seven".