85538501 has 4 divisors (see below), whose sum is σ = 85595904. Its totient is φ = 85481100.

The previous prime is 85538491. The next prime is 85538507. The reversal of 85538501 is 10583558.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10583558 = 2 ⋅5291779.

It is a cyclic number.

It is not a de Polignac number, because 85538501 - 2¹⁴ = 85522117 is a prime.

It is a super-3 number, since 3×85538501³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85538507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26405 + ... + 29466.

It is an arithmetic number, because the mean of its divisors is an integer number (21398976).

Almost surely, 2^85538501 is an apocalyptic number.

It is an amenable number.

85538501 is a deficient number, since it is larger than the sum of its proper divisors (57403).

85538501 is a wasteful number, since it uses less digits than its factorization.

85538501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57402.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 85538501 is about 9248.7026657797. The cubic root of 85538501 is about 440.6095219887.

The spelling of 85538501 in words is "eighty-five million, five hundred thirty-eight thousand, five hundred one".