85457505 has 32 divisors (see below), whose sum is σ = 157112064. Its totient is φ = 38854656.

The previous prime is 85457447. The next prime is 85457507. The reversal of 85457505 is 50575458.

It is not a de Polignac number, because 85457505 - 2¹² = 85453409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85457507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18157 + ... + 22373.

It is an arithmetic number, because the mean of its divisors is an integer number (4909752).

Almost surely, 2^85457505 is an apocalyptic number.

It is an amenable number.

85457505 is a deficient number, since it is larger than the sum of its proper divisors (71654559).

85457505 is a wasteful number, since it uses less digits than its factorization.

85457505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425.

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

The square root of 85457505 is about 9244.3228524322. The cubic root of 85457505 is about 440.4704077166.

The spelling of 85457505 in words is "eighty-five million, four hundred fifty-seven thousand, five hundred five".