85130523 has 12 divisors (see below), whose sum is σ = 123323200. Its totient is φ = 56588976.

The previous prime is 85130503. The next prime is 85130531. The reversal of 85130523 is 32503158.

85130523 is a `hidden beast` number, since 8 + 5 + 130 + 523 = 666.

It is not a de Polignac number, because 85130523 - 2¹⁸ = 84868379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85130503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10411 + ... + 16692.

Almost surely, 2^85130523 is an apocalyptic number.

85130523 is a deficient number, since it is larger than the sum of its proper divisors (38192677).

85130523 is a wasteful number, since it uses less digits than its factorization.

85130523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27458 (or 27455 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 85130523 is about 9226.6203455003. The cubic root of 85130523 is about 439.9079060011.

The spelling of 85130523 in words is "eighty-five million, one hundred thirty thousand, five hundred twenty-three".