85753215 has 24 divisors (see below), whose sum is σ = 152641680. Its totient is φ = 45677664.

The previous prime is 85753211. The next prime is 85753237. The reversal of 85753215 is 51235758.

It is not a de Polignac number, because 85753215 - 2² = 85753211 is a prime.

It is a super-2 number, since 2×85753215² = 14707227765672450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85753215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85753211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107197 + ... + 107993.

It is an arithmetic number, because the mean of its divisors is an integer number (6360070).

Almost surely, 2^85753215 is an apocalyptic number.

85753215 is a deficient number, since it is larger than the sum of its proper divisors (66888465).

85753215 is an frugal number, since it uses more digits than its factorization.

85753215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 805 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 85753215 is about 9260.3031807819. The cubic root of 85753215 is about 440.9778784776.

The spelling of 85753215 in words is "eighty-five million, seven hundred fifty-three thousand, two hundred fifteen".