85130504 has 8 divisors (see below), whose sum is σ = 159619710. Its totient is φ = 42565248.

The previous prime is 85130503. The next prime is 85130531. The reversal of 85130504 is 40503158.

It can be written as a sum of positive squares in only one way, i.e., 50438404 + 34692100 = 7102^2 + 5890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×85130504² = 14494405422588032, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 5320649 + ... + 5320664.

Almost surely, 2^85130504 is an apocalyptic number.

It is an amenable number.

85130504 is a deficient number, since it is larger than the sum of its proper divisors (74489206).

85130504 is a wasteful number, since it uses less digits than its factorization.

85130504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10641319 (or 10641315 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 85130504 is about 9226.6193158708. The cubic root of 85130504 is about 439.9078732739.

The spelling of 85130504 in words is "eighty-five million, one hundred thirty thousand, five hundred four".