85174577 has 4 divisors (see below), whose sum is σ = 87922176. Its totient is φ = 82426980.

The previous prime is 85174571. The next prime is 85174597. The reversal of 85174577 is 77547158.

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.

It is a cyclic number.

It is not a de Polignac number, because 85174577 - 2¹⁴ = 85158193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85174571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373753 + ... + 1373814.

It is an arithmetic number, because the mean of its divisors is an integer number (21980544).

Almost surely, 2^85174577 is an apocalyptic number.

It is an amenable number.

85174577 is a deficient number, since it is larger than the sum of its proper divisors (2747599).

85174577 is a wasteful number, since it uses less digits than its factorization.

85174577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747598.

The product of its digits is 274400, while the sum is 44.

The square root of 85174577 is about 9229.0073680759. The cubic root of 85174577 is about 439.9837752282.

The spelling of 85174577 in words is "eighty-five million, one hundred seventy-four thousand, five hundred seventy-seven".