Search a number
-
+
85195177 = 172294793
BaseRepresentation
bin1010001001111…
…11100110101001
312221022100210221
411010333212221
5133302221202
612242010041
72053101304
oct504774651
9187270727
1085195177
11440aa441
1224646921
131485bc62
14b459b3b
15772d037
hex513f9a9

85195177 has 6 divisors (see below), whose sum is σ = 90501758. Its totient is φ = 80183424.

The previous prime is 85195147. The next prime is 85195181. The reversal of 85195177 is 77159158.

It can be written as a sum of positive squares in 3 ways, for example, as 27678121 + 57517056 = 5261^2 + 7584^2 .

It is a de Polignac number, because none of the positive numbers 2k-85195177 is a prime.

It is a super-2 number, since 2×851951772 = 14516436368122658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85195147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147108 + ... + 147685.

Almost surely, 285195177 is an apocalyptic number.

It is an amenable number.

85195177 is a deficient number, since it is larger than the sum of its proper divisors (5306581).

85195177 is a wasteful number, since it uses less digits than its factorization.

85195177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294827 (or 294810 counting only the distinct ones).

The product of its digits is 88200, while the sum is 43.

The square root of 85195177 is about 9230.1233469548. The cubic root of 85195177 is about 440.0192433044.

The spelling of 85195177 in words is "eighty-five million, one hundred ninety-five thousand, one hundred seventy-seven".

Divisors: 1 17 289 294793 5011481 85195177