85547505 has 16 divisors (see below), whose sum is σ = 138233664. Its totient is φ = 45172800.

The previous prime is 85547489. The next prime is 85547509. The reversal of 85547505 is 50574558.

It is not a de Polignac number, because 85547505 - 2⁴ = 85547489 is a prime.

It is a super-2 number, since 2×85547505² = 14636751223450050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85547509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26719 + ... + 29748.

It is an arithmetic number, because the mean of its divisors is an integer number (8639604).

Almost surely, 2^85547505 is an apocalyptic number.

It is an amenable number.

85547505 is a deficient number, since it is larger than the sum of its proper divisors (52686159).

85547505 is a wasteful number, since it uses less digits than its factorization.

85547505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56576.

The product of its (nonzero) digits is 140000, while the sum is 39.

The square root of 85547505 is about 9249.1894239441. The cubic root of 85547505 is about 440.6249813390.

The spelling of 85547505 in words is "eighty-five million, five hundred forty-seven thousand, five hundred five".