85300521 has 4 divisors (see below), whose sum is σ = 113734032. Its totient is φ = 56867012.

The previous prime is 85300469. The next prime is 85300529. The reversal of 85300521 is 12500358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85300521 - 2⁹ = 85300009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85300491 and 85300500.

It is not an unprimeable number, because it can be changed into a prime (85300529) 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, 14216751 + ... + 14216756.

It is an arithmetic number, because the mean of its divisors is an integer number (28433508).

Almost surely, 2^85300521 is an apocalyptic number.

It is an amenable number.

85300521 is a deficient number, since it is larger than the sum of its proper divisors (28433511).

85300521 is a wasteful number, since it uses less digits than its factorization.

85300521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28433510.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 85300521 is about 9235.8281166336. The cubic root of 85300521 is about 440.2005301509.

Adding to 85300521 its reverse (12500358), we get a palindrome (97800879).

It can be divided in two parts, 853005 and 21, that multiplied together give a triangular number (17913105 = T₅₉₈₅).

The spelling of 85300521 in words is "eighty-five million, three hundred thousand, five hundred twenty-one".