85263530 has 64 divisors (see below), whose sum is σ = 177666048. Its totient is φ = 29156160.

The previous prime is 85263491. The next prime is 85263557. The reversal of 85263530 is 3536258.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169259 + ... + 169761.

It is an arithmetic number, because the mean of its divisors is an integer number (2776032).

Almost surely, 2^85263530 is an apocalyptic number.

85263530 is an abundant number, since it is smaller than the sum of its proper divisors (92402518).

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

85263530 is a wasteful number, since it uses less digits than its factorization.

85263530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 85263530 is about 9233.8253178193. The cubic root of 85263530 is about 440.1368892259.

Adding to 85263530 its reverse (3536258), we get a palindrome (88799788).

The spelling of 85263530 in words is "eighty-five million, two hundred sixty-three thousand, five hundred thirty".