85200520 has 16 divisors (see below), whose sum is σ = 191701260. Its totient is φ = 34080192.

The previous prime is 85200517. The next prime is 85200523. The reversal of 85200520 is 2500258.

It is an interprime number because it is at equal distance from previous prime (85200517) and next prime (85200523).

It can be written as a sum of positive squares in 2 ways, for example, as 85045284 + 155236 = 9222^2 + 394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85200491 and 85200500.

It is not an unprimeable number, because it can be changed into a prime (85200523) 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, 1064967 + ... + 1065046.

Almost surely, 2^85200520 is an apocalyptic number.

It is an amenable number.

85200520 is an abundant number, since it is smaller than the sum of its proper divisors (106500740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85200520 is a wasteful number, since it uses less digits than its factorization.

85200520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130024 (or 2130020 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 85200520 is about 9230.4127751688. The cubic root of 85200520 is about 440.0284416877.

Adding to 85200520 its reverse (2500258), we get a palindrome (87700778).

The spelling of 85200520 in words is "eighty-five million, two hundred thousand, five hundred twenty".