Search a number
-
+
147455161 = 7217229773
BaseRepresentation
bin10001100100111…
…11110010111001
3101021110111110021
420302133302321
5300222031121
622344250441
73440230300
oct1062376271
9337414407
10147455161
1176264277
1241470a21
132471a799
1415825437
15ce2a641
hex8c9fcb9

147455161 has 24 divisors (see below), whose sum is σ = 182648520. Its totient is φ = 118282752.

The previous prime is 147455153. The next prime is 147455173. The reversal of 147455161 is 161554741.

It can be written as a sum of positive squares in 4 ways, for example, as 38378025 + 109077136 = 6195^2 + 10444^2 .

It is not a de Polignac number, because 147455161 - 23 = 147455153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147455261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190371 + ... + 191143.

It is an arithmetic number, because the mean of its divisors is an integer number (7610355).

Almost surely, 2147455161 is an apocalyptic number.

It is an amenable number.

147455161 is a deficient number, since it is larger than the sum of its proper divisors (35193359).

147455161 is a wasteful number, since it uses less digits than its factorization.

147455161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1026 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 147455161 is about 12143.1116687610. Note that the first 3 decimals coincide. The cubic root of 147455161 is about 528.3073578258.

The spelling of 147455161 in words is "one hundred forty-seven million, four hundred fifty-five thousand, one hundred sixty-one".

Divisors: 1 7 17 49 119 229 773 833 1603 3893 5411 11221 13141 27251 37877 91987 177017 190757 643909 1239119 3009289 8673833 21065023 147455161